Question

find this solution as soon as possible because of urgent need​

Answer 1

Answer:

m = 500 kg, displacement (s) = 80m , t=10sec , g= $10 m/s^{2}$

Force = mg = 500 x 10 = 5000N

We know that,

Work = F x s  

W = 5000 x 80 = 400000 = 4 x $10^{5}$ Joule

Power = $\frac{work}{time}$

P = $\frac{4*10^{5} }{10}$ = 4 x $10^{4}$ W

  = 40 kW

 

Power Rating = Useful power/ efficiency

Power Rating = 40kW/0.4 = 100kW

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