A partacle is thrown in horizontal direc...

A partacle is thrown in horizontal direction with speed u from a point P, the top of a tower shown in figure.1.49 at a vertical height `h` above the inclined plane of inclination `theta`. Find the speed with which the particle is thrown so that it strikes the plane normally. Also find the distance from the foot of the tower where the particle will strike.

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The correct Answer is:

`"[" [sqrt((2gh)/(2 + cot^(2) theta)), (2h)/(sin theta (2 + cot^(2) theta))] "]"`

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