Question

in this question I know that the energy transfer is taking place ..but I don't know that where the energy gone... so please tell​

Answer 1

Answer:

If only internal forces are doing work (no work done by external forces), then there is no change in the total amount of mechanical energy. The total mechanical energy is said to be conserved. ... In these situations, the sum of the kinetic and potential energy is everywhere the same.

Answer 2

Answer:

energy can neither be created nor destroyed. it just converts into different forms