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 distance between the Earth and Sun were to be doubled from its present value, the number of days in a year would be ___________.
The work done by the Sun’s gravitational force on the Earth is __________.
If the mass and radius of the Earth are both doubled, then the acceleration due to gravity g'
Write unit of the gravitational field.
Define gravitational potential.
If a comet suddenly hits the Moon and imparts energy which is more than the total energy of the Moon, what will happen?
Two bodies of masses m and 4m are placed at a distance of r. Calculate the gravitational potential at a point on the line joining them where the gravitational field is zero.
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?
