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A bob is suspended from a crane by a cab...

A bob is suspended from a crane by a cable of length `l=5m` . The crane and load are moving at a constant speed `v_(0)` The crane is stopped by a bumper and the cable swings out an angle of `60^(@)` . Find the initial speed `v_(0).(g=9.8m//s^(2))`

A

10 m/s

B

7 m/s

C

4 m/s

D

2 m/s

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The correct Answer is:
B
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