Work done by a variable force

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

L2: Work Done by a Variable Force

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Summary: This is lecture 2 for the topic Work, Energy and Power. You can find notes of lecture 1 for this topic here. 1. Why $W = \vec{F} \cdot \vec{s}$ Fails The formula $W = \vec{F} \cdot \vec{s}$ only applies when the force is strictly constant in both magnitude and direction over the entire displacement. … Read more