When a body is taken from pole to the equator its weight
Remains constant
Increases
Decreases
None
At what height above the earth's surface is the value of $'g'$ is same as in a $200\, km$ deep mine ........ $km$
The radius of a planet is $R$. A satellite revolves around it in a circle of radius $r$ with angular velocity $\omega _0.$ The acceleration due to the gravity on planet’s surface is
In order to make the effective acceleration due to gravity equal to zero at the equator, the angular velocity of rotation of the earth about its axis should be $(g = 10\,m{s^{ - 2}}$ and radius of earth is $6400 \,kms)$
The escape velocity from a planet is $V_e.$ A tunnel is dug along the diameter of the planet and a small body dropped into it. The speed of the body at the centre of the planet will be
Suppose the earth stopped rotating. Then, the weight a body will