Grade 12th passMechanics

A car of mass 1000kg moves at a constant speed of 20m/sec up an incline .assume that the frictional force is 200N and that sin=1/20 ,find the power developed by the engine

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sreekanth

7 Years agoGrade 12th pass

2 Answers

Ojas

7 Years ago

14000 watts.

As Power = F.V

And v = 20m/s

F is force given by engine to overcome forces trying to stop car

As v is constant so net force by engine is equal to force trying to stop it

Namely Gravity and friction

F = mgsinx + friction = 100000/20 + 200 = 700

Power = 700*20 = 14000

Dibas chy

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A car of mass 1000kg moves at a constant speed of 20m/sec up an incline .assume that the frictional force is 200N and that sin=1/20 ,find the power developed by the engine

sreekanth

2 Answers

Ojas

Dibas chy

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