1. Caawiye Member

    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

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