A lorry of mass 15 000 kg climbs a hill of length 500 m at a constant speed. The hill is inclined at 2.5◦
to the horizontal. The resistance to the lorry’s motion is constant and equal to 800 N.
(i) Find the work done by the lorry’s driving force.
Correct me if I'm wrong, but isn't PE is mgh? h here is the height, not the distance so why does the answer time 500 ? SOme help please
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to the horizontal. The resistance to the lorry’s motion is constant and equal to 800 N.
(i) Find the work done by the lorry’s driving force.
Correct me if I'm wrong, but isn't PE is mgh? h here is the height, not the distance so why does the answer time 500 ? SOme help please
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