Question

A uniform metal rod of length 'L' and mass 'M' is rotating about an axis passing through one of the ends perpendicular to the rod with angular speed ${}^{\prime }{\omega }^{\prime }.$ If the temperature increases by ${}^{\prime \prime }{t}^{\circ }{C}^{\prime \prime }$ then the change in its angular velocity is proportional to which of the following ? (Coefficient o f linear expansion of rod = $\alpha$ )

• A. $\sqrt{\omega }$
• B. $\omega$
• C. ${\omega }^2$
• D. $1/\omega$

Answer 1

Answer: (B)

Correct answer is (b) $\omega$