A tow truck drags a stalled car along a road. The chain makes an angle of 30° with the road and the tension in the chain is 1500 N. How much work is done by the truck in pulling the car 1 km?
To find: The work done.
Write the expression to find the work done .
is the displacement vector, and
is the angle between and .
Consider the conversion factor for kilometer to meter.
In equation (1), substitute for , for and for
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