Tom and Jerry both push on the 2.90-m-diameter merry-go-round shown in (Figure 1

Question

Tom and Jerry both push on the 2.90-m-diameter merry-go-round shown in (Figure 1) . Tom pushes with a force of 50.0 N and Jerry pushes with a force of 37.0 N .

https://session.masteringphysics.com/problemAsset/1819717/7/Knight3e.ch07.p23.jpg

Part A

What is the net torque on the merry-go-round?

Express your answer to three significant figures and include the appropriate units.

Part B

What is the net torque if Jerry reverses the direction that he pushes by 180 without changing the magnitude of his force?

https://session.masteringphysics.com/problemAsset/1819717/7/Knight3e.ch07.p23.jpg

Express your answer to three significant figures and include the appropriate units.

Part A

What is the net torque on the merry-go-round?

Express your answer to three significant figures and include the appropriate units.

Part B

What is the net torque if Jerry reverses the direction that he pushes by 180 without changing the magnitude of his force?

Express your answer to three significant figures and include the appropriate units.

ANONYMOUS-1990 PLEASE DON'T ANSWER. ANSWER IT IS NOT -54

Explanation / Answer

here,

diameter , d = 2.9 m

radius , r = 1.45 m

Ft = 50 N , Fj = 37 N

a)

the net torque on the merry-go-round , T = Ft * sin(60) * r - Ft * sin(80) * r

T = 1.45 * ( 50 * sin(60) - 37 * sin(80)) N.m

T = 9.95 N.m

the net torque is 9.95 N.m counterclockwise

b)

the net torque if Jerry reverses the direction that he pushes by 180 degree without changing the magnitude of his force , T' = Ft * sin(60) * r + Ft * sin(80) * r

T' = 1.45 * ( 50 * sin(60) + 37 * sin(80)) N.m

T = 115.6 N.m

the net torque is 115.6 N.m counterclockwise

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