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Question

A particle of mass m = 2kg is placed on the top of a hemisphere of M 4 kg. The hemisphere is placed on smooth ground. The particle is displaced gently. Then ratio of normal and pseudo force(seen from hemisphere frame) acting on particle when theta = 30 degree. Assume particle remain in contact with hemisphere.

Joshi sir comment

$L e t t h e a c c e l e r a t i o n o f h e m i s p h e r e i s a_{h} N \sin θ = M a_{h} \Rightarrow N / m a_{h} = M / m \sin θ H e r e p s e u d o f o r c e i s c o n s i d e r e d d u e t o a c c e l e r a t i o n o f h e m i s p h e r e$

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