Question

a 1 hp motor pumps out water from a well of depth 20m and fills a water tank of volume 2238 litres at height from the ground the running time of the motor to fill the emptytank is (g =10m/s2)

Answer 1

Here is your answer ⤵⤵⤵

Mass of water from well => density x volume => 1*2238 gms or 2.238 Kg.

Work = mgh => 2.238*10*20 => 447.6 J

For height 10 m from the ground= > 2.238*10*10 => 223.8 J

Net Energy required = > 447.6 – 223.8 => 223.8 J

1 HP =746 w = 746 J

time required => 223.8/746 => 0.3 seconds

HOPE IT HELPS YOU ☺☺ !!!