You may want to review (Pages 214 - 218) . Part A How much work is done by each

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You may want to review (Pages 214 - 218) .

Part A

How much work is done by each of the three forces?

Express your answers using two significant figures. Enter your answers numerically separated by commas.

1

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The three ropes shown in the bird's-eye view of the figure (Figure 1)are used to drag a crate 3.8 m across the floor.

You may want to review (Pages 214 - 218) .

Part A

How much work is done by each of the three forces?

Express your answers using two significant figures. Enter your answers numerically separated by commas.

W1, W2, W3 =

1

  kJ  

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600 N 20° 650 N T 30° T2 410 N

Explanation / Answer

work is done by each of the three forces is

W1=(T1Cos20)d =(600Cos20)*3.8 =2142.5 J

W2=(T2Cos30)d =(410Cos30)*3.8 =1349.7 J

W3=-T3d=-650*3.8 =-2470 J

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