A 050 Kg Solid Disk Spins at 250 Rpm

Multiple Choice

A 0.50 kg solid disk spins at 250 rpm. A torque of 12.5 N·m is applied for 0.150 s to bring it to rest. What is the disk's radius?

A) 0.54 m
B) 0.38 m
C) 0.29 m
D) 0.14 m