Advertisements
Advertisements
प्रश्न
If the masses of the Earth and Sun suddenly double, the gravitational force between them will ___________.
विकल्प
remain the same
increase 2 times
increase 4 times
decrease 2 times
Advertisements
उत्तर
If the masses of the Earth and Sun suddenly double, the gravitational force between them will increase 4 times.
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
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 ___________.
What is meant by the superposition of the gravitational field?
Is potential energy the property of a single object? Justify.
What is the difference between gravitational potential and 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 at any finite interval of time is
If the Earth’s pull on the Moon suddenly disappears, what will happen to the Moon?
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?
