A bob is suspended from a crane by a cable of length

PHYSICS · Subjective · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

l=5\text{ m}

. The crane and load are moving at a constant speed

v_0

. The crane is stopped by a bumper and the bob on the cable swings out through an angle of

60^\circ

. Find the initial speed

v_0

. Take

g=9.8\text{ m/s}^2