[" If 'E' represents total mechanical energy of a "],[" system while 'U' represents the potential "],[" energy,then E-U is "]

What is the unit of k in the relation U=(ky)/(y^(2)+a^(2)) where U represents the potential energy, y represents the displacement and a represents the maximum displacement i.e., amplitude ?

If E_(P)andE_(K) represent the potential energy and kinetic energy of a body undergoing S.H.M, then (E is the total energy of the body), at a position where the displacement is half the amplitude.

The magnitude of gravitational potential energy of the moon earth system is U with zero potential energy at infinite separation. The kinetic energy of the moon with respect to the earth is K.

The magnitude of gravitational potential energy of the moon earth system is U with zero potential energy at infinite separation. The kinetic energy of the moon with respect to the earth is K.

The magnitude of gravitational potential energy of the moon earth system is U with zero potential energy at infinite separation. The kinetic energy of the moon with respect to the earth is K.

The magnitude of gravitational potential energy of the moon-earth system is U with zero potential energy at infinite separation. The kinetic energy of the moon with respect to the earth is K

E, U and K represent total mechanical energy. potential energy and kinetic energy respectively of a satellite revolving around a planet, then which of the following is correct?