A simple pendulum is suspended from the ceiling of a stationary elevator, and the period is measured. If the elevator moves with constant velocity, the period
1.increases.
2.decreases.
3.remains the same.
[Ques. 2] If the amplitude of a system moving in simple harmonic motion is doubled, which of the following quantities doesnt change?
1.total energy
2.maximum speed
3.maximum acceleration
4.period
[Ques. 3] An object of mass m is attached to a horizontal spring, stretched to a displacement A from equilibrium and released, undergoing harmonic oscillations on a frictionless surface. The experiment is then repeated with a mass of 4m. Compared to the original total mechanical energy, the subsequent total mechanical energy of the object with mass 4m is
1.greater.
2.less.
3.equal.
[Ques. 4] An object of mass m is attached to a horizontal spring, stretched to a displacement A from equilibrium and released, undergoing harmonic oscillations on a frictionless surface with period T0. The experiment is then repeated with a mass of 4m. Choose the new period of oscillation.
1. 2T0
2. T0
3. T0/2
4. T0/4
[Ques. 5] When an object moving in simple harmonic motion is at its maximum displacement from equilibrium, which of the following is at a maximum?
1.velocity
2.acceleration
3.kinetic energy
[Ques. 6] For a simple harmonic oscillator, which of the following pairs of vector quantities can't both point in the same direction? (The position vector is the displacement from equilibrium.)
1.position and velocity
2.velocity and acceleration
3.position and acceleration
[Ques. 7] A block on the end of a horizontal spring is pulled from equilibrium at x = 0 to x = A and released. Through what total distance does it travel in one full cycle of its motion?
1. A/2
2. A
3. 2A
4. 4A
[Ques. 8] Suppose you are throwing two dice in a friendly game of craps. For any given
throw, the two numbers that are face up can have a sum of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
or 12. Which outcome is least probable?
1.2
2.2 and 12
3.7
4.6 and 10
5.11
[Ques. 9] Suppose you are throwing two dice in a friendly game of craps. For any given
throw, the two numbers that are face up can have a sum of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
or 12. Which outcome is most probable?
1.2
2.2 and 12
3.7
4.6 and 10
5.11
[Ques. 10] Which of the following is true for the entropy change of a system that undergoes a reversible, adiabatic process?
1.s < 0
2.s = 0
3.s > 0
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