Problem 2: A body of mass 0.025 kg attached to a spring is displaced through 0.1 m to right of the mean position, if spring constant is of the spring is 0.4 N/m and its velocity at the end of this displacement be 0.4 m/s. Calculate
(i) Time period (ii) Frequency (iii) Angular speed w (iv) Total energy (v) The amplitude (vi) Maximum velocity
(vii) The maximum acceleration
Answer
Given Mass, m = 0.025 kg spring constant, k = 0.4 N/m displacement, x = 0.1 velocity, v = 0.4 m/s
(i) Formula
Put values,
(ii) Formula
Put value of T from the above equation
(iii) Formula
Put the value of f from the above equation
(iv) Formula
Put values
(v) We know that the P.E energy at the extreme point is equal to the total energy of the system. Therefore,
(vi) When K.E is maximum, velocity is also maximum
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