An object is taken from a point P to another point Q in a gravitational field
Physics · JEE Advanced · NTA Exams — Gravitation
An object is taken from a point P to another point Q in a gravitational field
- Assuming the earth to be spherical, if both P and Q lie on earth’s surface the work done is zero
- If P is on earth’s surface and Q above it, the work done is minimum when it is taken along the straight-line PQ
- The work done depends only on the position of P and Q and is independent of the path along which the particle is taken
- There is no net work done if the object is taken from P to Q and then brought back to P, along any path
Answer
(A) Assuming the earth to be spherical, if both P and Q lie on earth’s surface the work done is zero, (C) The work done depends only on the position of P and Q and is independent of the path along which the particle is taken, (D) There is no net work done if the object is taken from P to Q and then brought back to P, along any path
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