A 3kg mass is attached to end of a light rod and made to move clockwise in a vertical circle of radius 2m and speed of 6m/s. The tension in the rod at the lowest point is most nearly
A. 54N
B. 84N
C. 30N
D. 24N
E. 39N
A. 54N
B. 84N
C. 30N
D. 24N
E. 39N