Gravitation — Set 2

The orbital speed v of a satellite in a circular orbit of radius r around a planet of mass M is?

The time period T of a satellite in a circular orbit of radius r around a planet of mass M is?

Astronauts in an orbiting spacecraft feel weightless mainly because?

For a uniform Earth, how does g vary with depth d below the surface (where d is small compared to R)?

The gravitational potential energy U of a mass m at distance r from a mass M (taking U = 0 at infinity) is?

If the distance between two masses is doubled, the gravitational force between them becomes?

Neglecting air resistance, the acceleration of a freely falling body near Earth is?

For a uniform solid sphere, the gravitational field at the exact center is?

Which statement about gravitational potential energy of a satellite in a bound orbit is correct?

A geostationary satellite must have which property?