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Physics-

General

Easy

Question

A particle initially at rest starts moving from point A on the surface of a fixed smooth hemisphere of radius $r$ as shown. The particle looses its contact with hemisphere at point B. C is centre of the hemisphere. The equation relating $alpha$ and $beta$ is

$3 s i n α = 2 c o s β$
$2 s i n α = 3 c o s β$
$3 s i n β = 2 c o s α$
$2 s i n β = 3 c o s α$

The correct answer is: $3 s i n invisible function application beta equals 2 c o s invisible function application alpha$

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B) force of friction when the block is displaced downwards by 2 m ? $open square brackets g equals 10 blank m s to the power of negative 2 end exponent close square brackets$

A block of mass 2 kg is released from rest on rough surface as shown in figure. Find the work done on the block by
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