Advertisements
Advertisements
Question
Define gravitational potential.
Advertisements
Solution
The gravitational potential is defined as the amount of work required to bring unit mass from infinity to that point.
APPEARS IN
RELATED QUESTIONS
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 magnitude of the Sun’s gravitational field as experienced by Earth is
Define the gravitational field.
Write unit of the gravitational field.
Derive the expression for gravitational potential energy.
The work done by Sun on Earth in one year will be
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?
What is the gravitational potential energy of the Earth and Sun? The Earth to Sun distance is around 150 million km. The mass of the Earth is 5.9 × 1024 kg and the mass of the Sun is 1.9 × 1030 kg.
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?
