1. Which
of the following best illustrates the acceleration
of a pendulum bob at points a through
e ?
2.
The coefficient of static friction between a small coin and the surface of a turntable is 0.30. The turntable rotates at 33.3 revolutions
per minute. What is the maximum
distance from the center of the turntable
at which the coin will not slide?
(A)
0.024 m
(B)
0.048 m
(C)
0.121 m
(D)
0.242 m
(E)
0.484 m
3.
A satellite of mass m orbits a planet of mass M in a circular orbit of radius R.
The time required for one revolution
is
(A)
independent of M
(B)
proportional to √m
(C)
linear in R
(D)
proportional to R3/2
(E)
proportional to R2
4.
In a nonrelativistic, one-dimensional collision, a particle of mass 2m collides with a particle of mass m at rest. If the
particles stick together after the collision, what fraction of the initial kinetic energy is lost in the collision?
(A)
0
(B)
1/ 4
(C)
1/3
(D)
1/2
(E)
2/3
5.
A three-dimensional harmonic oscillator is in thermal equilibrium with a temperature reservoir at temperature T. The average
total energy of the oscillator is
(A)
1/2 kT
(B)
kT
(C)
3/2 kT
(D)
3kT
(E)
6kT
Ans:
6.
An ideal monatomic gas expands quasi-statically to twice its volume. If the
process is isothermal, the work done by the gas is Wi . If
the process is adiabatic, the work done by the gas is Wa . Which
of the following is true?
(A)
Wi = Wa
(B)
0 = Wi < Wa
(C)
0 < Wi < Wa
(D)
0 = Wa < Wi
(E)
0 < Wa < Wi
7.
Ans:
