Question
Write the main characteristics of potential energy

Answer

 (i) Potential energy is a scalar function of position.
(ii) The negative value of the derivative of potential energy with respect to position determines the force $\overrightarrow{F}=-\frac{d}{d t} U_{(x)}$
(iii) The value of potential energy depends on the frame of reference.
(iv) The concept of potential energy is defined only for internal conservative forces and not for non-conservative forces.
(v) Change in potential energy continous during the motion of a rigid object because the distance between its particles doesn't change even when external force is applied to the motion of a rigid object.

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