Problem 10: 8000 g body vibrates SHM with amplitude 0.3 m. The restoring force is 60 N. Find out;
(i) T (ii) a (iii) v (iv) K.E (v) P.E, when the displacement is 12 cm.
Solution
Given data Mass of the body = 8000 g = 8 kg
Amplitude = Maximum distance = 0.3 m
Force = 60 N Distance = x = 12 cm = 0.12 m
(i) To find the time period, T.
We know that
To find k, we have F = kx OR k = F/x
Therefore,
(ii) To find the acceleration, a.
Put values
(iii) To find Velocity, v.
Put values
(iv) To find Kinetic energy, K.E.
Put values
(v) To find Potential energy, P.E.
Put values
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