Question

A 10 kg piano is hoisted on a crane and delivered through the window of a six story apartment 20 m above the ground what is the potential energy of the piano?

Answer 1

1962 J

Step-by-step explanation:

potential energy= mgh

m=10 kg

h=20 m

g=9.81 (always unless otherwise stated)

PE= 10(20)(9.81)=1962 J