Advertisements
Advertisements
प्रश्न
What is the difference between gravitational potential and gravitational potential energy?
Advertisements
उत्तर
| Gravitational potential | Gravitational potential energy |
| Amount of work done required to bring unit mass from infinity to the distance r. | Amount of work done in bringing the body from infinity to a given point in the gravitational field of other body. |
| It is given by, V(r) = `-"Gm"_1/"r"` | It is given by, U(r) = `-("Gm"_1"m"_2)/"r"` |
APPEARS IN
संबंधित प्रश्न
A planet moving along an elliptical orbit is closest to the Sun at distance r1 and farthest away at a distance of r2. If v1 and v2 are linear speeds at these points respectively. Then the ratio `"v"_1/"v"_2` is
If the mass and radius of the Earth are both doubled, then the acceleration due to gravity g'
Will the angular momentum of a planet be conserved? Justify your answer.
Define gravitational potential energy.
Derive the expression for gravitational potential energy.
If the Earth’s pull on the Moon suddenly disappears, what will happen to the Moon?
If the ratio of the orbital distance of two planets `"d"_1/"d"_2` = 2, what is the ratio of gravitational field experienced by these two planets?
Calculate the gravitational field at point O due to three masses m1, m2 and m3 whose positions are given by the following figure. If the masses m1 and m2 are equal what is the change in a gravitational field at the point O?
Earth revolves around the Sun at 30 km s−1. Calculate the kinetic energy of the Earth. In the previous example, you calculated the potential energy of the Earth. What is the total energy of the Earth in that case? Is the total energy positive? Give reasons.
An object is thrown from Earth in such a way that it reaches a point at infinity with non-zero kinetic energy `["K"."E"("r" = ∞) = 1/2 "Mv"_"∞"^2]`, with what velocity should the object be thrown from Earth?
