Rotational Motion Question 112

Question: Distance of the centre of mass of a solid uniform cone from its vertex is z0 . If the radius of its base is R and its height is h then z0 is equal to

Options:

A) h24R

B) 3h4

C) 5h8

D) 3h28R

Show Answer

Answer:

Correct Answer: B

Solution:

[b]

dm=πr2.dy.r

yCM=ydmdm=0hπr2dy×ρ×y13πR2hρ=3h4



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