Question

8. A motor pump expends 20,000 J of energy and in doing so, it raises 200 kg of
water to the top of a building. If g = 10 m/s?, calculate the height of the building.​

Answer 1

Answer:

Energy of the Motor Pump = 20,000 J

Mass of the Water = 200 kg

Acceleration Due To Gravity = 10 m/s2

Height = x

AS THE ENERGY IS STORED AT SOME HEIGHT,

Energy = mgh

20,000 = 200 * 10 * x

20,00 = 2000x

x = 20,000/2000

x = 10 metres

Therefore the Height of the Building is 10 Metres

HOPE IT HELPS

Answer 2

Answer:

Work done/ energy created by the motor pump=20000J

mass of the water raised =200kg

g=10m/s

Height=?

Let the height be 'h'

Now.,

W. D=mgh

20000 =200*10*h

20000/2000=h

h=10m

Therefore height of the building is 10m.