1.

An unruly demonstrator lift a stone of mass `m` kg from the ground and throws it at this opponent. At the time of projection, the stone is at height `h` meter above the ground and has a speed of `v(m)//(s)` what horse power does he use?A. `(1)/(2)(mv^2)/(746)`B. `(mgh)/(746)`C. `((1)/(2)mv^2+mgh)/(746)`D. `((1)/(2)mv^2-mgh)/(746)`

Answer» Correct Answer - C
`hp=(mgh+(1)/(2)mv^2)/(746)`


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