Question

PLZ TELL FAST..... A water pump raises 50 litre of water through height of 25 m in 5 s. calculate power of pump requires. (Take g= 10 N and density of water = 1000 kg m-³)

Answer 1

we know that power =work done or energy consumed / time taken to do that work or consuming that amount of energy.
energy stored in water by lifting it up to 25 metres = m x g x h.
potential energy = m x g x h.
energy stored in water = 50 x 10 x 25.
that is 12500 joules.
we know that time taken to lift it up to 25 metres = 5 seconds.
then power = 12500 / 5.
power =2500 Watt.
we also know that 1 kilo watt = 1000 watt.
show 2500 watt =2.5 kilowatt.
or 2.5 kW.
PLEASE MARK IT AS A BRAINLIEST ANSWER.

Answer 2

Height = 25m

Time = 5s

Volume = 50l

${ \blue{ \bf{ Let's \: convert \: volume \:to \:density: }}}$

density = mass / volume

So,

${ \blue{ \bf{ 1m² = 1000l }}}$

${ \blue{ \bf{ density = mass / volume }}}$

1000=mass/(1/1000×50)

mass=1000×50×1/1000

${ \blue{ \bf{ =50kg }}}$

${ \blue{ \bf{W=F=mg=50×10=500 }}}$

P=500×25/5

${ \blue{ \bf{P=2500W \: Ans }}}$