Physics 011
MC#5
Chapter 5: Circular Motion; Gravitation

A Cadillac with mass 3 m_{o} and a Volkswagen with mass m_{o} go around the same unbanked circular curve on the freeway. Bumper to bumper they go with the same speed v_{o}. The centripetal acceleration of the VW is a_{o} and the centripetal force acting on it is F_{o}. The centripetal acceleration of the Cadillac is ___ a_{o}. 


more
than 


less
than 


equal
to 


incomparable
with 




A Cadillac with mass 3 m_{o} and a Volkswagen with mass m_{o} go around the same unbanked circular curve on the freeway. Bumper to bumper they go with the same speed v_{o}. The centripetal acceleration of the VW is a_{o} and the centripetal force acting on it is F_{o}. The centripetal force acting on the Cadillac is ___ F_{o}. 


less
than 


more
than 


equal
to 


incomparable
with 




A Cadillac with mass 3 m_{o} and a Volkswagen with mass m_{o} go around the same unbanked circular curve on the freeway. Bumper to bumper they go with the same speed v_{o}. The centripetal acceleration of the VW is a_{o} and the centripetal force acting on it is F_{o}. If its speed was increased to 3 v_{o}, the centripetal acceleration of the VW would be a_{o} x ___. 


1 


3 


6 


9 


10 


16 




A Cadillac with mass 3 m_{o} and a Volkswagen with mass m_{o} go around the same unbanked circular curve on the freeway. Bumper to bumper they go with the same speed v_{o}. The centripetal acceleration of the VW is a_{o} and the centripetal force acting on it is F_{o}. If the speed of the cars was 2 v_{o}, the centripetal force acting on the VW would be F_{o} x ___. 


1 


2 


3 


4 


6 


8 




Two spherical planets with radii R1 = 2 R_{o} and R2 = R_{o} and masses m_{1} = 2 m_{o} and m_{2} = m_{o} respectively are in circular orbits of radii r_{1} = 2 r_{o} and r_{2} = r_{o} respectively about the same star which has mass M_{s} m_{o}. Much of this is depicted in the following figure. The year for the first
planet (the one with mass m_{1}) is ___ the year for the second
planet. 


less
than 


more
than 


equal
to 


incomparable
with 




Two spherical planets with radii R1 = 2 R_{o} and R2 = R_{o} and masses m_{1} = 2 m_{o} and m_{2} = m_{o} respectively are in circular orbits of radii r_{1} = 2 r_{o} and r_{2} = r_{o} respectively about the same star which has mass M_{s} m_{o}. Much of this is depicted in the following figure. The speed of the first
planet in its orbit is ___ the speed of the second planet in its orbit. 


less
than 


equal
to 


more
than 


incomparable
with 




Two spherical planets with radii R1 = 2 R_{o} and R2 = R_{o} and masses m_{1} = 2 m_{o} and m_{2} = m_{o} respectively are in circular orbits of radii r_{1} = 2 r_{o} and r_{2} = r_{o} respectively about the same star which has mass M_{s} m_{o}. Much of this is depicted in the following figure. The magnitude of the
gravitational force exerted by the star on the first planet is ___ the
magnitude of the gravitational force exerted by the star on the second
planet. 


equal
to 


less
than 


more
than 


incomparable
with 




Two spherical planets with radii R1 = 2 R_{o} and R2 = R_{o} and masses m_{1} = 2 m_{o} and m_{2} = m_{o} respectively are in circular orbits of radii r_{1} = 2 r_{o} and r_{2} = r_{o} respectively about the same star which has mass M_{s} m_{o}. Much of this is depicted in the following figure. The acceleration of
gravity on the surface of the second planet is ___ the acceleration of
gravity on the surface of the first planet. 


more
than 


equal
to 


less
than 


incomparable
with 




Two spherical planets with radii R1 = 2 R_{o} and R2 = R_{o} and masses m_{1} = 2 m_{o} and m_{2} = m_{o} respectively are in circular orbits of radii r_{1} = 2 r_{o} and r_{2} = r_{o} respectively about the same star which has mass M_{s}m_{o}. Much of this is depicted in the following figure. The magnitude of the
gravitational force exerted on the first planet by the second planet is ___
the magnitude of the gravitational force exerted on the second planet by the
first planet. 


more
than 


less
than 


equal
to 


incomparable
with 




The force of gravity between two bodies is: 


inversely
proportional to the distance between them. 


directly
proportional to the distance between them. 


inversely
proportional to the square of the distance between them. 


directly
proportional to the square of the distance between them. 




Two bodies of equal mass are separated by a distance of 2 meters. If the mass of one body is doubled, the force of gravity between the two bodies will 


be
half as great. 


be
twice as great. 


be
one fourth as great. 


be
four times as great. 




The distance between a spaceship and the center of the Earth increases from one Earth radius to three Earth radii. What happens to the force of gravity acting on the spaceship? 


It
becomes 1/9 as great. 


It
becomes 9 times as great. 


It
becomes 1/3 as great. 


It
becomes 3 times as great. 




A 100 kg astronaut lands on a planet with a radius three times that of Earth and a mass nine times that of Earth. The acceleration due to gravity, g, experienced by the astronaut will be 


nine
times the value of g on earth. 


three
times the value of g on earth 


the
same value as g on earth. 


one
third the value of g on earth. 




For the system of a man in an elevator, his weight will appear to be greatest when 


the
elevator rises at a constant velocity. 


the
elevator is accelerated upward. 


the
elevator falls at a constant velocity. 


None
of the above because weight is constant. 