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At t=0, a force F = kt is applied on a b...

At t=0, a force F = kt is applied on a block of mass m making an angle `alpha` with the horizontal . Suppose surfaces to be smooth. Find the velocity of the body at the time of breaking off the plane.

A

`( mg cos alpha)/( 2 k sin alpha)`

B

`( m^(2) g^(2) cos alpha)/( 2k sin^(2) alpha)`

C

`( mg^(2) cos alpha)/( 2 k sin^(2) alpha)`

D

`( mg^(2) cos^(2) alpha)/( 2k sin alpha)`

Text Solution

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The correct Answer is:
C
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