Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE?

Q-1;  Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE?

1) The acceleration is largest when the oscillating mass is instantaneously at rest.
2) The larger the spring force constant the larger the period.
3) The period of the motion depends linearly on the amplitude of the motion.
4) The acceleration is larger when the oscillating mass has its greatest velocity.
ANSWER: 1 -- THE ACCELERATION IS LARGEST WHEN THE OSCILLATING
MASS IS INSTANTANEOUSLY AT REST

Q-1; An ice skater is rotating with her arms extended. When she pulls in her arms her rate of rotation increases. Which of the following statements dealing with the process is TRUE?

1) Her moment of inertia is increased.
2) Kinetic energy is conserved.
3) The skater does work when pulling in her arms.
4) Angular momentum is increased.
ANSWER: 3 -- THE SKATER DOES WORK WHEN PULLING IN HER ARMS

Q-1; If viewed on an oscilloscope, the loudness of a sound wave would be associated with the wave's:

1) frequency
2) wavelength
3) velocity
4) amplitude
ANSWER: 4 -- AMPLITUDE

Q-1; If a sled has a constant acceleration of 2 meters per second squared and starts from rest, the distance in meters that it will have covered after 5 seconds is:

1) 10 meters
2) 20 meters
3) 25 meters
4) 50 meters
ANSWER: 3 -- 25 METERS