Embibe Experts Solutions for Chapter: Gravitation, Exercise 1: AMU-AT (B.Tech.) 2017

A particle falls towards earth from infinity. Its velocity on reaching the earth would be:

According to Kepler's law, the time period of a satellite varies with its radius as

A small satellite is in elliptical orbit around the earth as shown in figure. $L$ denotes the magnitude of its angular momentum and $K$denotes its kinetic energy. If $1$ and $2$ denote two positions of the satellite, then

A satellite of mass $M$ is revolving in circular orbit of radius $r$ around the earth. Time of revolution of the satellite is

Two bodies of masses $m$ and $4m$ are placed at a distance $r$. The gravitational potential at a point on the line joining them where the gravitational field is zero is