Embibe Experts Solutions for Chapter: Gravitation, Exercise 1: Exercise

The gravitational potential energy of the Moon with respect to Earth is

A satellite $S$ is moving in an elliptical orbit around the earth. The mass of the satellite is very small compared to the mass of the earth, then :

For a satellite moving in an orbit around the earth, the ratio of kinetic energy to the potential energy is _____.

A satellite in vacuum

What is the binding energy of the earth-sun system neglecting the effect of other planets and satellites? (Mass of earth $M_e=6\times {10}^{24}$ $\mathrm{k}{\mathrm{g},}^{}$ mass of the sun $M_s=2\times {10}^{30} \mathrm{k}{\mathrm{g}}^{-2},$ Distance between earth & sum $=1.5\times {10}^{11} \text{m}$) Assume circular orbit of the earth around the sun.

A synchronous relay satellite reflects T.V. signals and transmits T.V. programs from one part of the world to the other because its:

The polar satellites are used for high-resolution imaging of the earth surface because

A person sitting in a chair in a satellite feels weightless because