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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

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

Grade:11

2 Answers

Hrishant Goswami
343 Points
7 years ago

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.

JUnnarkar
37 Points
7 years ago

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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