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I want the solution of this question as quick as possible sir, please give me the solution of this.

I want the solution of this question as quick as possible sir, please give me the solution of this.

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Grade:11

1 Answers

Arun
25750 Points
5 years ago
In this question,the cable does not work on the bob.So,the bobs energy is conserved.1/2 mV2 = mgh .......(1)here, h= l cosθ = 5 cos60 = 5/2 .......(2)from equations (1) and (2), we find1/2 mV2 = m×9.8×5/2V2 =49 V=7 m/sec
Regards
Arun
 
 

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