Question

please solve and give solution also​

Answer 1

elevator moves upward hence frictional force oppose their motion in downward.

so, net force act on elevator =mg+F

because mg is act downward and F (frictional force) act also downward.

Fnet=(1800 x 9.8+4000) N

=(17640+4000)N=21640N

now

power =Fnet x speed

=21640 x 2=43280 watt