Assuming potential energy 'U' at ground level to be zero.

All objects are made up of same material :-
`{:(U_(P) = "Potential energy of solid sphere",U_(Q) = "Potential energy of solid cube",),(U_(R ) = "Potential energy of solid cone",U_(S) = "Potential energy of solid cylinder",):}`

Options

A. `U_(S) gt U_(P)`
B. `U_(Q) gt U_(S)`
C. `U_(P) gt U_(Q)`
D. `U_(S) gt U_(R )`

Answer

A, B, C

Explanation

`PE` of solid sphere
`= mgR = "mg"(D)/(2) = rhogD^(4) ((pi)/(12))`
`PE` of solid cube
`= "mg"(D)/(2) = rhogD^(4)((1)/(2))`
PE of solid cone
`= "mg"(D)/(4) = rhogD^(4) ((pi)/(48))`
PE of solid cylinder
`"mg"(D)/(2) = rogD^(4) ((pi)/(8))`