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What is the minimum work needed to push a 975 kg car 230 m up along a 17.5° incline?
Assume the effective coefficient of friction retarding the car is 0.20?


15 years ago

Answers

bobpursley
work needed= change of PE+work done on friction
= m*g*230*sin17.5 + mg*mu*cos17.5*230

check that and think it out.
15 years ago

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