question_answer

Distance of the centre of mass of a solid uniform cone from its vertex is \[{{z}_{0}}\]. If the radius of its base is R and its height is h then \[{{z}_{0}}\]is equal to:                                                                      [JEE MAIN 2015]

A)   \[\frac{5h}{8}\]           

B)                    \[\frac{3{{h}^{2}}}{8R}\]

C)   \[\frac{{{h}^{2}}}{8R}\]                   

D)        \[\frac{3h}{4}\]

Correct Answer: D

Solution :

[d]