Advertisements
Advertisements
Question
The work done by Sun on Earth at any finite interval of time is
Options
positive, negative or zero
Strictly positive
Strictly negative
It is always zero
Advertisements
Solution
It is always zero
APPEARS IN
RELATED QUESTIONS
The gravitational potential energy of the Moon with respect to Earth is ____________.
If the mass and radius of the Earth are both doubled, then the acceleration due to gravity g'
Define the gravitational field.
Define gravitational potential energy.
Define gravitational potential.
Derive the expression for gravitational potential energy.
The work done by Sun on Earth in one year will be
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?
