A tow truck pulls a car 5.50 km along a horizontal roadway using a cable having

Question

A tow truck pulls a car 5.50 km along a horizontal roadway using a cable having a tension of 810 N.

A tow truck pulls a car 5.50 km along a horizontal roadway using a cable having a tension of 810 N. How much work does the cable do on the car if it pulls horizontally? How much work does the cable do on the car if it pulls at 32.5 degree above the horizontal? How much work does the cable do on the tow truck if it pulls the car horizontally? How much work does the cable do on the tow truck if it pulls the car at 32.5 degree above the horizontal? How much work does gravity do on the car in part (a) if its pulled horizontally? How much work does gravity do on the car in part (a) of its pulled at an angle of 32.5 degree?

Explanation / Answer

(a) W = Fs cos0 = 810*5500m = 4455000 J

3757308 J

(b) -4455000 J

-3757308 J

(c) 0

since gravity is perpendicular to displacement and so cos90 = 0

0

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