A rigid metallic sphere is spinning around its own axis in the absence of external torque. If the temperature is raised, its volume increases by 9%. The change in its angular speed is

Step-by-step solution

(d) In this case, angular momentum, J=I Taken, v=1V^ =1.09 and v=0.09 1 I But I r^2 and v^ 1 / 3 1 v^ 2 / 3 ( or v^ -2 / 3 ) Change in angular speed aligned & = 100=- 2 3 v v 100 & =- 2 3 0.03 100=-6 % aligned So, angular speed will decrease with 6 % .