Note: Newtons third law To every action, there is an equal and opposite reaction (1) Both the action and reaction forces belong to the system (2) The total work done by action and reaction forces is independent of the reference frame chosen(even in non-inertial frame) Prove point(2) Ch 12 Energy II: Potential energyCh.12 Energy II: Potential energy To every action, there is an equal and opposite reaction. Newton’s third law Note: (1) Both the action and reaction forces belong to the system. (2) The total work done by action and reaction forces is independent of the reference frame chosen (even in non-inertial frame). Prove point (2):