Define work energy theorem.
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Posted by Lucifer?? Morningstar?? 5 years, 4 months ago
- 3 answers
Gaurav Seth 5 years, 4 months ago
The Work- Energy Theorem states that the work done on or by the body is equal to the change in its kinetic energy.
Consider a force F applied on the body of mass m moving on the horizontal frictionless surface.
Let after travelling a distances s, the velocity of body change from u to v.
The small amount of work, dW done by force F in displacing the body by ds is,
dW = 
dW = mv dv
Now, integrating both sides, we have
That is,
Work = Change in Kinetic energy.
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Lucifer?? Morningstar?? 5 years, 4 months ago
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