Advertisements
Advertisements
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
पर्याय
`"r"_2/"r"_1`
`("r"_2/"r"_1)^2`
`"r"_1/"r"_2`
`("r"_1/"r"_2)^2`
Advertisements
उत्तर
`"r"_2/"r"_1`
APPEARS IN
संबंधित प्रश्न
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'
The magnitude of the Sun’s gravitational field as experienced by Earth 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 ___________.
Write unit of the gravitational field.
Is potential energy the property of a single object? Justify.
Derive the expression for gravitational potential energy.
If the Earth’s pull on the Moon suddenly disappears, what will happen to the Moon?
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.
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?
