Question

A cinder block is sitting on a platform 20 m high. Its mass 70 kg. The
block has _____________ energy. Calculate it.

Answer 1

Explanation:

If a body is at rest at some hight it contain potential energy

hence

Potential Energy = mass× (acceleration dueto gravity)× (hight)

then P.E = mgh

= 70×9.81×20

= 1400×9.81

= 13734 j