Now take two balls of the same size and weight and release them from the top end of the channel. They will roll down and cover the same distance
The?balls will?posses?same?potential energy because the?channels?are ofsame height?as well as the?weight?of the?balls?are?same. ... At the?top of the channels, the total mechanical energy of the?balls?is in the form of potential energy. Now, as the?balls?roll down, they come into motion.