Question

the earth is assumed to be rotating in circular orbit around the sun with constant linear speed.does that mean the rate of change of its linear momentum is zero?If not ,how?​

Answer 1

Answer:  Angular momentum, like energy and linear momentum, is conserved. This universally applicable law is another sign of underlying unity in physical laws. Angular momentum is conserved when net external torque is zero, just as linear momentum is conserved when the net external force is zero.