Question

a 1500 kg automobile is travelling upto 20 degrees inclined at a speed of 6m/s. if the driver wishes to stop his car in a distance of 5m, determine the frictional force at pavement which must be supplied by rear wheels

Answer 1

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Answer 2

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Answer 3

KE=PE+W(fr)
m•v²/2 =m•g•h+F(fr) •s,
F(fr) =m(v²/2•s – g/ siná)