1.

A solid sphere rolls down a parabolic path , whose vertical dimension is given by y = kx^(2) and base of the parabola is at x = 0 . During the fall the sphere does not slip, but beyond the base the climb is frictionless. If the sphere falls through a height h, the height above the base that it would climb is

Answer»

54
7h
`(7)/( 5) H`
`( 5)/(7)h`

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