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Oscillations Test - 7

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Oscillations Test - 7
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  • Question 1
    1 / -0

    Whose motion is an ideal case of SHM?

    Solution

    When an electric dipole will pe placed in an electric field and given a small angular displacement it will oscillate about its mid point due to different line of forces that give rise to torque.

  • Question 2
    1 / -0

    A particle executes SHM of time period T, the time period with which the total energy changes is

    Solution

    Total mechanical energy E does not depend on time period T. It is given by

    E=1/2 mw2A2

  • Question 3
    1 / -0

    A particle is oscillating according to the equation X=7 cos 0.5 πt, where t is in seconds. The point moves from the position of equilibrium to maximum displacement in time

    Solution

    Given x=7 cos (0.5πt) 

    Time taken for max displacement  is half of total time period 

    Compairing it with standard equation x=A cos(wt)

    w=0.5 π

    Time taken t=

    T/2 = 1/2 × 2π/w = π/0.5π

    t  = 2 second

  • Question 4
    1 / -0

    Which of the following equations does not represent simple harmonic motion

    Solution

    Because this is not a periodic function.

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