Question

A wheel of mass $10kg$ has a moment of inertia of $160kg{m}^2$ about its own axis. The radius of gyration is

• A. $5m$
• B. $4m$
• C. $6m$
• D. $10m$

Answer 1

The correct option is B $4m$

Given,
Mass of wheel $m=10kg$
$l=160kg{m}^2$
Radius of gyration is,
$l=M{K}^2$
$K^2=\frac{1}{M}\frac{160}{10}$
$K=4m$
Final Answer: $\left(b\right)$