A circular saw is powered by a motor. When the saw is used to cutwood, the wood exerts a torque of 0.80N · m on the saw blade. If the blade rotateswith a constant angular velocity of 20 rad/s the work done on the blade by the motor in 1.0 min is:
A. 0
B. 480 J
C. 960 J
D. 1400 J
E. 1800 J