Question

The centre of gravity of a hollow cone of height h is at distance x from its vertex where the value of x is:
(a) h/3
(b) h/4
(c) 2h/3
(d) 3h/4

April 5, 2024

Answer

(c) 2h/3

Reason — The centre of gravity of a hollow cone is at a height h/3 from the base.

Hence, from the vertex the height is :

h – $h\over3$ = $3h - h \over3$ = $2h\over3$

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