Question

if the internal force are conservative the work done by the external force is equal to change in​

Answer 1

Answer:

If the internal forces within a system are conservative, then the work done by the external forces on the system is equal to the change in mechanical energy of the system. <br> S_(2): The potential energy of a particle moving along x- axis in a conservative force field is U=2x^(2)-5x+1 is S.I. units. No other forces are acting on it. It has a stable equalibrium position at one point on x- axis. <br> S_(3) : Internal forces can perform net work on a rigid body. <br> S_(4) : Internal forces can perform net work on a non - rigid body.

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