List of top Physics Questions on Gravitational Force asked in GAT-B

A boy sitting on a surface inside a satellite moving around the earth feels weightless because
Assume that a narrow tunnel is dug between two diametrically opposite points on the earth's surface. If a particle is released in this tunnel, it will execute simple harmonic motion. What will be the time period of SHM of this particle?
A satellite is revolving around the Earth at some height $(h)$. If $R$ is the radius of orbit, then the time period of satellite is proportional to