Advertisements
Advertisements
प्रश्न
Write unit of the gravitational field.
Advertisements
उत्तर
The unit of the gravitational field is N kg−1.
APPEARS IN
संबंधित प्रश्न
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 ___________.
If the mass and radius of the Earth are both doubled, then the acceleration due to gravity g'
An object of mass 10 kg is hanging on a spring scale which is attached to the roof of a lift. If the lift is in free fall, the reading in the spring scale is ___________.
Will the angular momentum of a planet be conserved? Justify your answer.
Is potential energy the property of a single object? Justify.
Derive the expression for gravitational potential energy.
Prove that at points near the surface of the Earth, the gravitational potential energy of the object is U = mgh.
The work done by Sun on Earth in one year will be
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?
