Question

a machine raise a load of 750N through a height of 16 m in 5s calculate the power of the machine if it is 100%efficient​

Answer 1

Answer:

We know that Work=F×s.

Here force is equal to 750 N and displacement is equal to 16 m.

Hence,

W=750×16=12000Joule.

Hence  energy spent is 12000J.

Power=work/time

P=12000/5=2400W.

Hence, we need a power of 2400 Watt.

Answer 2

Answer:

since E= mgh

and mg=750N

E=750*16 (h=16m)

E=12000 joule

And power =energy/time

P=12000/5

P=2400 watt

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