Question

an engine raises 50kg of water through a height of 30m in 20s what is the power of the engine?

Answer 1

Answer:

power is the rate of energyconsumption...

$power = \frac{energ}{time} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{potential \: energy}{time} \\\\ = \frac{mgh}{time} \\ \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{50 \times 10 \times 30}{20} \\ \\ = 750watt$

Good luck ♧♧

Answer 2

Given :-

Mass of the water, m = 50 kg

Height to which it is raised, h = 30 m

Time taken, t = 20 s

• $\sf P_{engine}$ = $\dfrac{Work}{Time}$

• $\sf P_{engine}$ = $\dfrac{P.E.}{Time}$

• $\sf P_{engine}$ = $\dfrac{mgh}{t}$

• $\sf P_{engine}$ = $\dfrac{50 × 10 × 30}{20}$

• $\sf P_{engine}$ = $\dfrac{15000}{20}$

• $\sf P_{engine}$ = 750 W

$\bold{Hope\;it \; helps\;!}$