Question

an engine supplies 148 joules of energy.If it is used to raise vertically an object of mass 500g how high can it be lifted?{g=10ms-2}

Guys i need the answer ver fast.pls pls pls help

Answer 1

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.
4 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.

Answer 2

height shiuld be 29.6 meteres high