Numerical :
A car of weight 20000N climbs up a hill at a steady speed of
8m/s,gaining a height of 120m in 100sec. Calculate a). work done by the car and b).power of engine .
A car of weight 20000N climbs up a hill at a steady speed of
8m/s,gaining a height of 120m in 100sec. Calculate a). work done by the car and b).power of engine .
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=20000 × -120
= -2400000 J
Power = work /time
= 2400000/100 = 24000watt