The potential energy for a body of mass m that is acted on by a very massive body is…
Physics · JEE Advanced · NTA Exams — Work, Energy and Power
The potential energy for a body of mass m that is acted on by a very massive body is given by \(U=-m g x+\frac{k x^{3}}{3}\). The corresponding force is
- – mg + kx2
- mg – kx2
- mg – kx
- – mg + kx
Answer
(B) mg – kx2
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