A 4.50 kg counterweight is attached to a light cord, which is wound around a spool. The spool is a uniform solid cylinder of radius 6.00 cm and mass 1.80 kg.
(a) What is the net torque on the system about the point O?
Magnitude _____________
(b) When the counterweight has a speed v, the pulley has an angular speed ? = v/R. Determine the total angular momentum of the system about O.
______________ v kg·m2/s
(c) Using the fact that = d/dt and your result from (b), calculate the acceleration of the counterweight.
______________m/s