A man spinning in free space changes of his body e.g by spreading his arms and curling up. By doing this, he can change his 1) moment of inertia 2) angular momentum 3) angular velocity 4) rotational kinetic energy in this Which of the following is correct?

Question

a) 1,2 and 3

b) 1,3 and 4

c) 2,3 and 4

d) 1,2 and 4