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An engine supplies 196 joules of energy. If the energy is supplied to a weight of 500 gms. How
high can it be lifted
(a) 38.2
(b) 39.2
(c) 40.2
(d) 42
Ans- (b) Energy supplied to the engine = 196 JMass of water = 500 gm = 500/1000 = ½ kg2Acceleration due to ground (g) = 10 mt/sec .Energy required for lifting water = mghH = energy supplied / m x g = 196 x 2 / 1 x 10 = 39.2 mt.
39.2
Energy supplied to the engine = 196 J
Mass of water = 500 gm = 500/1000 = ½ kg
Acceleration due to ground (g) = 10 mt/sec2.
Energy required for lifting water = mgh H = energy supplied / m x g = 196 x 2 / 1 x 10 = 39.2 mt.
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