you stand on a frictionless platform tha tis rotating with anangular speed of 1.5 rev/s. your arms are outstretched, andyou hold a heavy wight in each hand. the moment of inertia ofyou , the extened wights, and the ltform is 6 kg m^2. when you pullthe wights in toward your body the monent of inertia decreases to1.8 kg m^2
A) what is the resulting angular speed of the platform?
B) what is the chang in kinetic energy of the system?
C) where did this increase in energy come from?