Question

♡

In Figure 1.10 a trolley is attached to a mass
of 0.2 kg. The 0.2 kg mass is allowed to fall to
the floor.
a) Calculate the gravitational potential energy of
the 0.2 kg when it is 0.9 m above the ground.

Answer 1

Ep=mgh

Ep=0.2×9.8×0.9

Ep=1.764 J

gravitational potential energy is 1.764 joules