Physics 011
MC#11
Chapter 11: Vibrations and Waves
1 
Each force in the list of forces that make up this question is the net, external force acting on an object of mass m_{o} that is free to move in the x direction only. The vector x is the displacement of the object relative to a fixed point on the x axis (this could be the origin). The symbols a, b, c and d are positive constants and F_{o} is a small constant force directed in the positive x direction. The proposition (True, T or False, F) is that each of these forces would cause the object on which it is acting to undergo simple harmonic motion. F = a x 

True 

False 


2 
Each force in the list of forces that make up this question is the net, external force acting on an object of mass m_{o} that is free to move in the x direction only. The vector x is the displacement of the object relative to a fixed point on the x axis (this could be the origin). The symbols a, b, c and d are positive constants and F_{o} is a small constant force directed in the positive x direction. The proposition (True, T or False, F) is that each of these forces would cause the object on which it is acting to undergo simple harmonic motion. F =  d x 

True 

False 


3 
Each force in the list of forces that make up this question is the net, external force acting on an object of mass m_{o} that is free to move in the x direction only. The vector x is the displacement of the object relative to a fixed point on the x axis (this could be the origin). The symbols a, b, c and d are positive constants and F_{o} is a small constant force directed in the positive x direction. The proposition (True, T or False, F) is that each of these forces would cause the object on which it is acting to undergo simple harmonic motion. F =  (a x + F_{o} ) 

True 

False 


4 
Each force in the list of forces that make up this question is the net, external force acting on an object of mass m_{o} that is free to move in the x direction only. The vector x is the displacement of the object relative to a fixed point on the x axis (this could be the origin). The symbols a, b, c and d are positive constants and F_{o} is a small constant force directed in the positive x direction. The proposition (True, T or False, F) is that each of these forces would cause the object on which it is acting to undergo simple harmonic motion. F = ((a + b
+ c)) x 

True 

False 


5 
Each force in the list of forces that make up this question is the net, external force acting on an object of mass m_{o} that is free to move in the x direction only. The vector x is the displacement of the object relative to a fixed point on the x axis (this could be the origin). The symbols a, b, c and d are positive constants and F_{o} is a small constant force directed in the positive x direction. The proposition (True, T or False, F) is that each of these forces would cause the object on which it is acting to undergo simple harmonic motion. F =  a x + F_{o} 

True 

False 


6 
Each force in the list of forces that make up this question is the net, external force acting on an object of mass m_{o} that is free to move in the x direction only. The vector x is the displacement of the object relative to a fixed point on the x axis (this could be the origin). The symbols a, b, c and d are positive constants and F_{o} is a small constant force directed in the positive x direction. The proposition (True, T or False, F) is that each of these forces would cause the object on which it is acting to undergo simple harmonic motion. F =  (b e^{(c/d)}) x 

True 

False 


7 
Each force in the list of forces that make up this question is the net, external force acting on an object of mass m_{o} that is free to move in the x direction only. The vector x is the displacement of the object relative to a fixed point on the x axis (this could be the origin). The symbols a, b, c and d are positive constants and F_{o} is a small constant force directed in the positive x direction. The proposition (True, T or False, F) is that each of these forces would cause the object on which it is acting to undergo simple harmonic motion. F =  ((a +
b/d + c)) x 

True 

False 


8 
Each force in the list of forces that make up this question is the net, external force acting on an object of mass m_{o} that is free to move in the x direction only. The vector x is the displacement of the object relative to a fixed point on the x axis (this could be the origin). The symbols a, b, c and d are positive constants and F_{o} is a small constant force directed in the positive x direction. The proposition (True, T or False, F) is that each of these forces would cause the object on which it is acting to undergo simple harmonic motion. F =  a x /((x^{•}x))


True 

False 


9 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the spring constant k_{o} had been slightly larger, the speed of the object as it passed through its equilibrium position would have been ___ v_{o}. 

equal
to 

less
than 

more
than 

incomparable
with 


10 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the spring constant k_{o}
had been slightly smaller, the period of the motion would have been ___ T_{o}.


more
than 

equal
to 

less
than 

incomparable
with 


11 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the spring constant k_{o}
had been slightly larger, the total energy associated with the motion of the
object would have been ___ E_{o}. 

less
than 

more
than 

equal
to 

incomparable
with 


12 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the object had been
released from rest at a distance less than A_{o} from its equilibrium
position, the speed of the object as it passed through its equilibrium
position would have been ___ v_{o}. 

equal
to 

less
than 

more
than 

incomparable
with 


13 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the object had been
released from rest at a distance greater than A_{o} from its
equilibrium position, the period of the motion would have been ___ T_{o}.


more
than 

equal
to 

less
than 

incomparable
with 


14 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the object had been
released from rest at a distance less than A_{o} from its equilibrium
position, the total energy of the motion would have been ___ E_{o}. 

less
than 

more
than 

equal
to 

incomparable
with 


15 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the mass of the object
had been slightly less than m_{o}, the speed of the object as it
passed through its equilibrium position would have been ___ v_{o}. 

equal
to 

less
than 

more
than 

incomparable
with 


16 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the mass of the object
had been slightly larger than m_{o}, the period of the motion would
have been ___ T_{o}. 

more
than 

equal
to 

less
than 

incomparable
with 


17 
An object with mass m_{o}, free to move on
a one dimensional, horizontal frictionless surface is subjected to a
restoring force of magnitude k_{o}x where x is the distance
separating the object from its equilibrium position, (i. e., the position is
which the net force acting on it is zero.) The direction of this restoring
force acting on the object is such that it always pushes or pulls the object
back toward its equilibrium position. The object is pulled aside until it is
a distance A_{o} from its equilibrium position, held at rest and
released. The object then undergoes simple harmonic motion with period T_{o}.
The total energy associated with the motion of the object is E_{o}.
As the object passes through its equilibrium position its speed is v_{o}. If the mass of the object
had been slightly less than m_{o}, the total energy of the motion
would have been ___ E_{o}. 

less
than 

more
than 

equal
to 

incomparable
with 


18 
A 20kg weight is attached to a wall by a spring. A 5.0 Newton force horizontally displaces it 1.0 meters from its equilibrium position along a frictionless floor. What is the closest estimate of the period of the oscillation of the weight? 

2.0
seconds 

6.0
seconds 

13
seconds 

16
seconds 


19 
A pendulum with a length L has a period of 2 seconds. In order for the pendulum to have a period of 4 seconds, we must 

halve
the length. 

quarter
the length. 

double
the length. 

quadruple
the length. 


20 
If a pendulum 12 meters long has a frequency of 0.25 hertz, what will be the period of a second pendulum at the same location if its length is 3.0 meters? 

2.0
s 

3.0
s 

4.0
s 

6.0
s 


21 
A pendulum clock is losing time. How should the pendulum be adjusted? 

The
weight of the bob should be decreased so it can move faster. 

The
length of the wire holding the bob should be shortened. 

The
amplitude of the swing should be reduced so the path covered is shorter. 

None
of the above. 


22 
A simple pendulum has a period of 4.63 seconds at a place on the earth where the acceleration of gravity is 9.82 m/s^{2}. At a different location the period increases to 4.64 seconds. What is the value of g at this second point? 

9.78
m/s^{2} 

9.82
m/s^{2} 

9.86
m/s^{2} 

Cannot
be determined without knowing the length of the pendulum. 


23 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the length of the string had been slightly longer than L_{o}, the period of the motion would have been ____ T_{o}. 

equal
to 

less
than 

more
than 

incomparable
with 


24 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the mass of the
pendulum bob had been slightly larger than m_{o}, the period of the
motion would have been ____ T_{o}. 

equal
to 

less
than 

more
than 

incomparable
with 


25 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the angle which the
string makes with the vertical when the bob was released from rest had been
slightly less than _{o},
the period of the motion would have been ____ T_{o}. 

equal
to 

less
than 

more
than 

incomparable
with 


26 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the same pendulum was
set in motion in the same way on the surface of the moon, the period of the
motion would be ___ T_{o}. 

equal
to 

less
than 

more
than 

incomparable
with 


27 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the length of the
string had been slightly longer than L_{o}, the total mechanical
energy of the pendulum bob would have been ___ E_{o}. 

more
than 

equal
to 

less
than 

incomparable
with 


28 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the mass of the
pendulum bob had been slightly larger than m_{o}, the total
mechanical energy of the pendulum bob would have been ___ E_{o}. 

more
than 

equal
to 

less
than 

incomparable
with 


29 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the angle which the
string makes with the vertical when the bob was released from rest had been
slightly less than _{o},
the total mechanical energy of the pendulum bob would have been ___ E_{o}.


more
than 

equal
to 

less
than 

incomparable
with 


30 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the same pendulum was
set in motion in the same way on the surface of the moon, the total
mechanical energy of the pendulum bob would have been ___ E_{o}. 

more
than 

equal
to 

less
than 

incomparable
with 


31 
If the length of the string had been slightly longer than L_{o}, the speed of the pendulum bob as it passed through the lowest point in its swing would have been ___ v_{o}. 

less
than 

more
than 

equal
to 

incomparable
with 


32 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the mass of the
pendulum bob had been slightly larger than m_{o}, the speed of the
pendulum bob as it passed through the lowest point in its swing would have
been ___ v_{o}. 

less
than 

more
than 

equal
to 

incomparable
with 


33 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the angle which the
string makes with the vertical when the bob was released from rest had been
slightly less than _{o},
the speed of the pendulum bob as it passed through the lowest point in its
swing would have been ___ v_{o}. 

less
than 

more
than 

equal
to 

incomparable
with 


34 
A simple pendulum is made by tying an object with mass m_{o} to the end of a string of length L_{o}, the other end of which is tied to the ceiling. The object is pulled aside until the string makes a small angle _{o} with the vertical, held at rest and released. The pendulum bob then undergoes simple harmonic motion with period T_{o} and the total mechanical energy of the pendulum bob is E_{o}. At the lowest point in its swing, the speed of the pendulum bob is v_{o}. If the same pendulum was
set in motion in the same way on the surface of the moon, the speed of the
pendulum bob as it passed through the lowest point in its swing would be ___
v_{o}. 

less
than 

more
than 

equal
to 

incomparable
with 


35 
What is the wavelength of a transverse wave which has a speed of 15 meters per second and a frequency of 5.0 hertz? 

3.0
m 

10
m 

20
m 

45
m 


36 
If the speed of a transverse wave of a violin string is 12 meters per second and the frequency played is 4.0 H_{z}, what is the wavelength of the sound? 

48
m 

12
m 

3.0
m 

0.33
m 


37 
What is the speed of a longitudinal sound wave in a steel rod if Young's modulus for steel is 20 x 10^{10} N/m^{2} and the density of steel is 8 x 10^{3} kg/m^{3}? 

4.0
x 10^{8} m/s 

5.0
x 10^{3} m/s 

25
x 10^{6} m/s 

2.5
x 10^{9} m/s 


38 
If two identical sound waves interact in phase, the resulting wave will have 

a
shorter period. 

a
larger amplitude. 

a
higher frequency. 

a
greater velocity. 


39 
Two waves of the same speed, same frequency and same wavelength moving in the same medium in the same direction at the same time have amplitudes of 6 cm and 2 cm respectively. If the waves are in phase, the amplitude of the resulting wave will be ___ cm. 

2 

4 

8 

10 

some
other value 


40 
Two waves of the same speed, same frequency and same wavelength moving in the same medium in the same direction at the same time have amplitudes of 6 cm and 2 cm respectively. If the two waves are 180^{o}
out of phase, the amplitude of the resulting wave will be ___ cm. 

2 

4 

8 

10 

some
other value 