Question

A hollow sphere of mass 50 kg and radius 5m is rotated about one of its diameter. What will be the rotational inertia of hollow sphere about this axis?

• A. $2500kg-m^2$
• B. $\frac{2500}{3}kg-c{m}^2$
• C. $\frac{250}{3}kg-m^2$
• D. None of these

Answer 1

The correct option is D None of these

As you know, $(M.I{)}_{Hollowsphere}=\frac{2}{3}M{R}^2$
Given, M = 50 kg
R = 5m
$M.I=\frac{2}{3}\times 50\times 25=\frac{2500}{3}kg-m^2$