Question

Define the term radius of gyration

Write down the formular for it

Define the term TORQUE of a body about an axis of rotation

Answer 1

Solution

the term radius of gyration

Means this is simply distance from the point where it is rotating and where transffer energy has maximum effect.

Formula

$K=\sqrt{\frac{I}{m}}$

I is moment of inertia

m is mass

Torque:-in general torque is a quantity which shows effect of force.

Which is given by

$\tau=rF sin\theta$

$\theta$ is angle between r and F.