A body starts falling freely from height H hits an inclined plane in its path at height h . As a result of…

A body starts falling freely from height H hits an inclined plane in its path at height h. As a result of this perfectly elastic impact, the direction of the velocity of the body becomes horizontal. The value of Hh for which the body will take the maximum time to reach the ground is _____.

Solution

Total time of flight =T can be written as, 

T=2hg+2H-hg

For maximum time =dTdh=0

2g12h-12H-h=0

H-h=h

h=H2Hh=2

Asked in: JEE Main 2024 (31 Jan Shift 1)

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