Rankers Physics

Principal of Conservation of Energy: Practice Problem & Solution

A mass m slips along the wall of a hemispherical surface of radius R. The velocity at the bottom of the surface is Principal of Conservation of Energy diagram: A mass m slips along the wall of
√Rg
2√Rg
√3Rg
√2Rg

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Principal of Conservation of Energy. Understanding the underlying formula is key to arriving at the correct answer below:

From Principal of conservation of Energy in absence of non-conservative forces,

Ui+ Ki= Uf+ Kf

mgR+0= 0+ ½mv²

v= √2gR

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