Question

A machine take 40kg object at 10 metre height then calculate the work of machine.

Answer 1

Work done is

PE = mgh

=40×10×10

= 4000j

Answer 2

Given

m=40kg

s=10m

g=9.8m/s^2

We know that

F =mg

=40×9.8

=392N

Now

W=F×s

=392×10

=3920J

HOPE IT'LL HELP U.