Question

A man with a mass of 60 kg walks up two flights of stairs in going from the first floor to the third floor (10 meters). Calculate his increase in potential energy.

Answer 1

potential energy is\[U=mgh\]U is notation for potential energy just like K is for kinetic energy. sometimes i see KE for kinetic energy but only sometimes. anyway you know his mass, a is known as well, and the height h he's gone from ground level. now multiply all that out.