Question
Download Solution PDFWork done by conservative force is equal to
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Non-conservative forces:
- A non-conservative force is one for which work depends on the path taken.
- Friction is an example of a non-conservative force that changes mechanical energy into thermal energy.
- Work Wnc done by a non-conservative force changes the mechanical energy of a system.
- In equation form, Wnc = ΔKE + ΔPE or, equivalently, KEi + PEi = Wnc + KEf + PEf.
Conservative forces:
- A conservative force is one, for which work done by or against it depends only on the starting and ending points of a motion and not on the path taken.
- Example potential energy, gravitational force etc.
- Work done by conservative force is equal to decrease in potential energy.
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