NTSE physics question 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 Please explain! Thanks
Answers
Answered by
24
Ans. (b) Energy supplied to the engine = 196 1
Mass of water= 500 gm = 500/1000 = 1/2 kg
Acceleration due to grom1d (g) = 10 mtlsec
2.Energy required for lifting water= mgh
H =energy supplied I m x g = 196 x 2 I 1 x 10 = 39.2 mt.
Mass of water= 500 gm = 500/1000 = 1/2 kg
Acceleration due to grom1d (g) = 10 mtlsec
2.Energy required for lifting water= mgh
H =energy supplied I m x g = 196 x 2 I 1 x 10 = 39.2 mt.
Answered by
47
Energy = 196 J
mass = 500g = 0.5 kg
let the height = h
Potential energy = mgh
196 = 0.5*10*h
h = 196/5 = 39.2 m
answer is B
mass = 500g = 0.5 kg
let the height = h
Potential energy = mgh
196 = 0.5*10*h
h = 196/5 = 39.2 m
answer is B
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