CHAPTER ONE: OSCILLATORY MOTION- PART ONE WITH ANSWERS

1) Which of the following is not an example of periodic motion? <strong>ANSWER: d) A ball falling to the ground.</strong> 2) If an object in periodic motion completes one full cycle in 0.5 seconds, what is the frequency of the motion? <strong>ANSWER: c) 2HZ</strong> 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? <strong>ANSWWER: c) It will stay at the same</strong> 4) If the is 48kg and the spring constant is 12N/m, what is the period of oscillation? <strong>ANSWER: b) 4 π s </strong> 5) If the mass is displaced 0.35 m from equilibrium position, the restoring force is 7 N. what is the spring constant? <strong>ANSWER: d) 2x101 N/m</strong> 6) Which of the following does not <strong>ANSWER: c) Amplitude of vibration</strong> 7) The total energy of the spring is 100J. What is the kinetic energy of the mass at equilibrium point? <strong>ANSWER: d) 100 J</strong> 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? <strong>ANSWER: c) the mass of pendulum bob</strong> 9) A mass oscillates horizontal spring with period T=S2.0s. what is the frequency? <strong>ANSWER: a) 0.50HZ</strong> 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? <strong>ANSWER: d) <strong>A and C</strong></strong> 11) Which of the following provides the best example of simple harmonic motion? <strong>ANSWER: d) swinging on a playground</strong> 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? <strong>ANSWER: c) Spring balance</strong> 13) The period of simple pendulum increase to <strong>ANSWER: a) Length increase</strong>