Question

The power of a pump which can pump and 100 kg of water in 10sec to a height of 10m is
OPTIONS
1.9.8kw
2.120kw
3.1.2kw
4.1200kwn 1

Answer 1

Answer:

980W

Explanation:

Given:

m = 100kg

g = 9.8 m/s²

t = 10 sec

h = 10m

To Find

Power

Solution

Power = work/time

P = mgh/t

P = (100 × 9.8 × 10 )/10

P = 9.8 × 100 W

P = 980W

Answer 2

Explanation:

power=work÷time

power=force×displacement ÷time

power=mg×h÷t

power=100×9.8×10÷10

power=980W