Why gravitational forces or spring forces are conservative forces ?
Why gravitational forces or spring forces are conservative forces ?
When an external force does work in taking a body from a point to another against a force like spring force or gravitational force, the work gets stored as potential energy of the body and when the external force is removed the body moves gaining kinetic energy and losing an equal amount of potential energy. The sum of kinetic energy and potential energies remains constant. Forces of these kinds are called conservative forces.
For examples : Spring force, gravitational force, electrostatic force, magnetic force etc.
Similar Questions
At a distance $l$ from a uniformly charged long wire, a charged particle is thrown radially outward with a velocity $u$ in the direction perpendicular to the wire. When the particle reaches a distance $2 l$ from the wire, its speed is found to be $\sqrt{2} u$. The magnitude of the velocity, when it is a distance $4 l$ away from the wire is (ignore gravity)
At a distance $l$ from a uniformly charged long wire, a charged particle is thrown radially outward with a velocity $u$ in the direction perpendicular to the wire. When the particle reaches a distance $2 l$ from the wire, its speed is found to be $\sqrt{2} u$. The magnitude of the velocity, when it is a distance $4 l$ away from the wire is (ignore gravity)
- [KVPY 2011]
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- [AIPMT 1994]