List of top Physics Questions on Gravitation asked in UP CPMT

If earth suddenly shrinks by one-third of its present radius, the acceleration due to gravity will be

A geostationary satellite has an orbital period of

The radius of gyration of body depends upon

The work done in shifting a particle of mass $m$ from the centre of the earth to the surface of the earth is (Where $M$ is the mass of the earth and $R$ is the radius of the earth)

The time period of a geostationary satellite is

Some iron beads are embedded in wax ball which is just floating in water. The volume of ball is $18 \,cm^{3}$ and relative density of wax is $0.9$. Then mass of the iron trapped in the ball is