JEE • Physics

Work, Power & Energy

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formula

Work by Constant & Multiple Forces

The source defines work by a constant force and extends it to multiple forces through the resultant force.

Constant force
W=F⃗⋅S⃗W=\vec F\cdot\vec S
Resultant force
∑F⃗=F⃗1+F⃗2+F⃗3+⋯\sum \vec F=\vec F_1+\vec F_2+\vec F_3+\cdots
W=(∑F⃗)⋅S⃗W=(\sum \vec F)\cdot\vec S
W=W1+W2+W3+⋯W=W_1+W_2+W_3+\cdots