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At the moment t=0 the force F=at is appl...

At the moment `t=0` the force `F=at` is applied to a small body of mass `m` resting on a smooth horizontal plane (a is constant).
The permanent direction of this force forms an angle `alpha` with the horizontal (figure). Find:
(a) the velocity of the body at the moment of its breaking off the plane,
(b) the distance traversed by the body up to this moment.

A

`(mg^(2)cos theta)/(2ksin^(2)theta)`

B

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

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
A

`kt cos theta=mxx((dv)/(dt))`
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