Question

machine raises a load of $750N$ through a height of $16m$ in $5s$. calculate:
(i) energy spent by machine.
(ii) power at which the machine works.

Answer 1

(i) Energy spent by machine or work done $=FS$
Work $W=750\times 16=12000J$
(ii) Power spent $=\frac{workdone}{timetaken}=\frac{12000J}{5s}=2400W$