5. Work, Energy and Power

Gravitational & Elastic Potential Energy of a Spring: Formulations & Energy Graphs | JEE Physics Class 11

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Concept Card: Gravitational & Elastic Potential Energy & Potential Curves 1. Fundamental Concept of Potential Energy ($U$): Potential energy is the configuration energy possessed by a system of interacting particles by virtue of their positions or internal strain relative to each other within a conservative field. Exclusive to Conservative Forces: Potential energy is strictly undefined … Read more

Work-Energy Theorem for Constant & Variable Forces | JEE Physics Class 11

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Concept Card: Work-Energy Theorem for Constant & Variable Forces 1. Statement & Universal Scope of the Work-Energy Theorem (WET): The net work done by all external and internal forces acting on a body (or system of bodies) equals the total change in its kinetic energy: $$\mathbf{W_{\text{net}} = \Delta K = K_f – K_i = \frac{1}{2}m … Read more

Work Done by Constant & Variable Forces & Kinetic Energy | JEE Physics Class 11

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Concept Card: Work Done by Constant & Variable Forces & Kinetic Energy 1. Physical Definition of Mechanical Work: Work is done by a force when its point of application undergoes a displacement having a non-zero component along the line of action of the force. Work Done by a Constant Force ($\vec{F}$): Defined as the scalar … Read more