1. System is a simple pendulum.
with L = 15 m
T = 2 pi sqrt( L / g)
T= 2 pi sqrt(15/9.8) = 7.77 s ......Ans
2. w = 2 pi / T = 0.808 rad/s
Applying momentum conservtion for the collision,
(0.7 x 30) + (50 x 0) = (50 + 0.7) v
v = 0.414 m/s ...this is the maximum velocity of oscillation.
and a_max = v_max w
a_max = 0.335 m/s^2 .....Ans
3. t = T / 4 = 7.77 / 4
(time taken from mean position to extreme position)
t = 1.94 s
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