A thin circular metal disc of radius 500 mm is set rotating about a central axis normal to its plane. Upon rising the temperature gradually, the radius increases to 507.5 mm. Find the percentage change in the rotational kinetic energy of the disc?

A thin circular metal disc of radius 500 mm is set rotating about a ce

1.	A thin circular metal disc of radius 500 mm is set rotating about a central axis normal to its plane. Upon rising the temperature gradually, the radius increases to 507.5 mm. Find the percentage change in the rotational kinetic energy of the disc?
Answer» ANSWER :`3%`