A student stands on a frictionless rotating platform while holding two masses at…
PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
A student stands on a frictionless rotating platform while holding two 1kg masses at arm’s length. The student–platform–mass system has a non-zero angular momentum about the central vertical axis. Which of the following actions will change the magnitude of that total angular momentum?
(a) Pulling the masses inward toward the axis
(b) Letting go of one mass so that it slides straight outward and off the platform
(c) Briefly pushing one mass against a nearby wall and then letting go
(d) Pushing the masses outward to increase their distance from the axis