Question

2) A box of books which has a mass
of 45 kg is being lifted by a person to a
height of 80 cm. Find the work done by
that person on lifting that box of
boobook​

Answer 1

Step-by-step explanation:

If h be the required height , the potential energy PE=mgh

or h=PE/mg=

5.8×10

145

=2.5m

Answer 2

Step-by-step explanation:

I hope this answer helps you