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A rod of length I leans by its upper end...

A rod of length I leans by its upper end against a smooth vertical wall, while its other end leans against the floor. The end that leans against the wall moves uniformly downward. Then:

A

The other end also moves uniformly

B

The speed of other end goes on decreasing

C

The speed of other end goes on increasing

D

The speed of other end first decreases and then increases

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The correct Answer is:
B
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