CHAPTER ONE: OSCILLATORY MOTION- PART ONE WITH ANSWERS

1) Which of the following is not an example of periodic motion?
ANSWER: d) A ball falling to the ground.
2) If an object in periodic motion completes one full cycle in 0.5 seconds, what is the frequency of the motion?
ANSWER: c) 2HZ
3) A mass oscillates in a simple harmonic motion with amplitude A, if the mass is halved, but
the amplitude is not changed, what will happen to the total mechanical energy of the system?
ANSWWER: c) It will stay at the same
4) If the is 48kg and the spring constant is 12N/m, what is the period of oscillation?
ANSWER: b) 4 π s
5) If the mass is displaced 0.35 m from equilibrium position, the restoring force is 7 N. what is the spring constant?
ANSWER: d) 2×101 N/m
6) Which of the following does not
ANSWER: c) Amplitude of vibration
7) The total energy of the spring is 100J. What is the kinetic energy of the mass at
equilibrium point?
ANSWER: d) 100 J
8) A pendulum bob hangs from a string and moves with simple harmonic motion, which of
the following does not affect the period of the pendulum?
ANSWER: c) the mass of pendulum bob
9) A mass oscillates horizontal spring with period T=S2.0s. what is the frequency?
ANSWER: a) 0.50HZ
10) A mass on a spring oscillates between point A ad C as shown. Use the figure 1.16 to
answer this question
At which point is the acceleration of the greatest?
ANSWER: d) A and C
11) Which of the following provides the best example of simple harmonic motion?
ANSWER: d) swinging on a playground
12) Hooks law states that the extension in an elastic material is proportional to the stretching
force which of the following devices makes use of this effect?
ANSWER: c) Spring balance
13) The period of simple pendulum increase to
ANSWER: a) Length increase