How much work is needed? physics
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How much work is needed? physics

[From: ] [author: ] [Date: 11-10-27] [Hit: ]
In practice, the work done might be more due to inefficiencies such as friction.......
a moving company tries to load a 143 kg antique chest onto a truck bed which is 1m off the ground. they use a 4m long ramp. how much work do they have to do?

if anyone could explain the steps to solve this problem. please and thanks

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The length of the ramp is irrelevant. The total work done is the weight of the chest multiplied by the vertical distance, that is

W = 143 kg * 9.8 m/s^2 * 1m = 1401.4 J

In practice, the work done might be more due to inefficiencies such as friction.
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