Question

11.Objects A and B interact with each other via both consenvative and cove ant E ee forces. Let K, and K, be the kinetic energies,U he the potential ner internal energy, If no extenal agent does work on theoge A) KU is conserved B) K+U+E,, is conserved C)K+K+E., is conserved D) KA+K,+U is conserved E) KA+K,+U+E is conserved

Answer 1

When only conservative forces act between bodies,sum of kinetic and potential energy remains vonstant.

But when there is non conservative interaction,these energy gets converted into internal energy eg.heat.

So whatever be the case sum of kinetic energy,potential energy and internal energy is conserved.