A body of mass 500 gram is rotating in a vertical circle of radius 1 m. What is the difference in its kinetic energies at the top and the bottom of the circle?

A body of mass 500 gram is rotating in a vertical circle of radius 1 m

1.	A body of mass 500 gram is rotating in a vertical circle of radius 1 m. What is the difference in its kinetic energies at the top and the bottom of the circle?
A.	9.8 J
B.	19.8 J
C.	4.9 J
D.	2.8 J
Answer» B. 19.8 J