Embibe Experts Solutions for Exercise 1: EXERCISE

Weight of a body decreases by $1.5\%,$ when it is raised to a height $h$ above the surface of earth. When the same body is taken to same depth $h$ in a mine, its weight will show

Let escape velocity of a body kept at surface of a planet is $u.$ If it is projected at a speed of $200\%$ more than the escape speed, then its speed in interstellar space will be

An artificial satellite is moving around earth in a circular orbit with speed equal to one fourth the escape speed of a body from the surface of earth. The height of satellite above earth's surface is ( $R$ is radius of earth)

A satellite of mass $200 \mathrm{kg}$ revolves around a planet of mass $5\times {10}^{30} \mathrm{kg}$ in a circular orbit of radius $6.6\times {10}^6 \mathrm{m}.$ Binding energy of the satellite is

Escape velocity of an atmospheric particle which is $1000 \mathrm{km}$ above the earth's surface, is (radius of earth is $6400 \mathrm{km}$ and $\mathrm{g}=9.8 {\mathrm{ms}}^{-2}$)

The ratio of kinetic energy required to be given to the satellite to escape from earth's surface to the kinetic energy required to be given to the same satellite to revolve around the earth in an orbit just above earth's surface, is

A satellite is revolving around earth in a circular orbit at a uniform speed $v.$ If gravitational force suddenly disappears, speed of the satellite will be

Mark the correct statement

$\left(\mathrm{i}\right)$ Escape velocity does not depend on mass of body

$\left(\mathrm{ii}\right)$ If total energy of a satellite becomes positive, it escapes from earth

$\left(\mathrm{iii}\right)$ Orbit of geostationary orbit is called parking orbit