Using a cable with a tension of 1330 N , a tow truck pulls a car 5.00 km along a

Question

Using a cable with a tension of 1330 N , a tow truck pulls a car 5.00 km along a horizontal roadway.

Part A

How much work does the cable do on the car if it pulls horizontally?

Express your answer with the appropriate units.

Part B

How much work does the cable do on the car if it pulls at 35.0 above the horizontal?

Express your answer with the appropriate units.

Part C

How much work does the cable do on the tow truck if it pulls horizontally?

Express your answer with the appropriate units.

Part D

How much work does the cable do on the tow truck if it pulls at 35.0 above the horizontal?

Express your answer with the appropriate units.

Part E

How much work does gravity do on the car in part A?

Express your answer with the appropriate units.

Using a cable with a tension of 1330 N , a tow truck pulls a car 5.00 km along a horizontal roadway.

Part A

How much work does the cable do on the car if it pulls horizontally?

Express your answer with the appropriate units.

W =

Part B

How much work does the cable do on the car if it pulls at 35.0 above the horizontal?

Express your answer with the appropriate units.

W =

Part C

How much work does the cable do on the tow truck if it pulls horizontally?

Express your answer with the appropriate units.

W =

Part D

How much work does the cable do on the tow truck if it pulls at 35.0 above the horizontal?

Express your answer with the appropriate units.

W =

Part E

How much work does gravity do on the car in part A?

Express your answer with the appropriate units.

W =

Explanation / Answer

a)

Work done is given by

W=Fdcos(o)

W=1330*5000*cos0=6.65*106 J

b)

W=1330*5000*cos35=5.45*106 J

c)

W=1330*5000*cos180=-6.65*106J

d)

W=1330*5000*cos(180-35)=-5.45*106J

e)

here o=900

=>W=0 J

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