King Fahd University of Petroleum & Minerals
Department of Physics

PHYS 101
Quiz # 7
Second Semester 1999-2000

Name:________________________________________ 	ID #:____________ Sec # ______

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Question:

A 0.8 kg block attached to a spring oscillates with simple harmonic motion according to the equation 
x = 0.5 sin ( 20 t + 0.1  ) m

a) What are the maximum values of  the speed and acceleration.

b) What is the potential energy stored in the spring when the block’s velocity is 5 m/s. 

King Fahd University of Petroleum & Minerals
Department of Physics

PHYS 101
Quiz # 7
Second Semester 1999-2000

Name:________________________________________ 	ID #:____________ Sec # ______

------------------------------------------------------------------------------------------------------------------------

Question:

A simple harmonic oscillator has an amplitude of 5.0 cm and a frequency of 4 rad/sec.

a)	What are the maximum values of its velocity and acceleration.

b) For what value(s) of the displacement is the kinetic energy of the oscillator equal to its potential energy?

King Fahd University of Petroleum & Minerals
Department of Physics

PHYS 101
Quiz # 7
Second Semester 1999-2000

Name:________________________________________ 	ID #:____________ Sec # ______

------------------------------------------------------------------------------------------------------------------------

Question:

A 0.8 kg block attached to a spring oscillates with simple harmonic motion according to the equation
 x = 0.5 sin ( 10t + p/2 ) m.
where x and t are in meter and second, respectively.

a) Find the total mechanical energy of the system.

b) Find the value of the spring constant k.