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Question

Three blocks are connected by different inextensible string as shown in the figure. If the velocity of block A is 10 m/s, the velocity of block C is


A
20 m/s
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B
5 m/s
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C
10 m/s
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D
8 m/s
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Solution

The correct option is C 10 m/s
As per the question, since, the string connecting block A and B is inextensible, so, the velocity of its end point will be same. Hence, the velocity of block B will be same as that of block A i.e. 10 m/s.
Again, the string connecting block B and C is inextensible, so, the velocity of its end point will be same. Hence, the velocity of block C will be same as that of block B i.e. 10 m/s.

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