Physics, asked by Nareyan, 9 months ago

The power of a crane is 6.25 kW. How
much mass of coal it can lift in 1 hour
from a mine of 100 m depth? The
efficiency of the crane is 80% and
g=10 m s-2

Answers

Answered by maniyachawla12

2

Answer:This may help you

Explanation:

Power=Work Done/time

= mgh/t

Efficiency =0.8

10³×6.25×0.8

=m×10×100/60×60

m=1800kg

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