A student of mass 60 kg stands at the edge of the platform of a

merry-go-round, which is a uniform circular disk of radius 2 m and

mass 200 kg. Assume that the student can be treated as a point

mass.

If the merry-go-round rotates at an angular velocity of 2 rad/s

around its axis, what is the angular momentum of the system

consisting of a student plus merry-go-round around the axis of

rotation of the platform?

a) 200 kg-m2/s

(b) 100 kg-m2/s

(c) 60 kg-m2/s

(d) 520 kg-m2/s

(e) 1280 kg-m2/s