Tom and Jerry both push on the 3.00-m-diameter merry-go-round shown in ( Figure
ID: 1290214 • Letter: T
Question
Tom and Jerry both push on the 3.00-m-diameter merry-go-round shown in (Figure 1) . Tom pushes with a force of 52.0N and Jerry pushes with a force of 37.5N .
A) What is the net torque on the merry-go-round?
B) What is the net torque if Jerry reverses the direction that he pushes by 180?without changing the magnitude of his force?
Please explain how to answer these!! Thank you!
Tom and Jerry both push on the 3.00-m-diameter merry-go-round shown in (Figure 1) . Tom pushes with a force of 52.0N and Jerry pushes with a force of 37.5N . A) What is the net torque on the merry-go-round? B) What is the net torque if Jerry reverses the direction that he pushes by 180?without changing the magnitude of his force?Explanation / Answer
tom's torque is counterclockwise, and has magnitude 52N sin 60 x 1.5 m (1.5 m is the radius of the wheel) =67.55
jerry's torque is clockwise and has magnitude 37.5N sin 80 x 1.5 m = 55.395
the net torque is the difference between the two since they are acting in opposite directions
if Jerry reversed his direction by 180 degrees, the magnitude of his torque would be the same, but it would now be in the same direction as Tom's so the net torque would be the sum of the two torques