Tom and Jerry both push on the 2.80 m --diameter merry-go-round shown in (Figure

Question

Tom and Jerry both push on the 2.80 m --diameter merry-go-round shown in (Figure 1) . Tom pushes with a force of 51.5 N  and Jerry pushes with a force of 35.0 N

Part A is 62.4 N*m (What is the magnitude of the torque exerted by Tom?)

Part B is 48.3 N*m (What is the magnitude of the torque exerted by Jerry?)

Part C is ccw, cw (What is the direction of the torque exerted by Tom's and by Jerry's force? Enter your answer by typing "cw" for clockwise and "ccw" for counter clockwise.)

Part D

What is the net torque on the merry-go-round? Use the usual sign convention for torque.

Explanation / Answer

Let counter clockwise be positive direction and F1=51.5N is in a counter clockwise direction.

= F1*r - F2*r
= (F1-F2)r
=(51.5 - 35)*½(2.8)
= 23.1 Nm (ccw)

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