Embibe Experts Solutions for Chapter: Gravitation, Exercise 5: Exercise (Conceptual Questions)

The tidal waves in the sea are primarily due to 

Mars has a diameter of approximately $0.5$ of that of earth and mass of $0.1$ of that of earth. The surface gravitational field strength on mars as compared to that on earth is greater by a factor of:-

If the earth stops rotating suddenly, the value of $\mathrm{g}$ at a place other than poles would:

A missile is launched with a velocity less than the escape velocity. The sum of kinetic energy and potential energy is :

The ratio of radii of two satellites is $\mathrm{p}$ and the ratio of their acceleration due to gravity is $q$. The ratio of their escape
velocities will be :

A body is projected vertically upwards from the surface of the earth with a velocity equal to half the escape velocity. If $R$ be the radius of the earth, maximum height attained by the body from the surface of the earth is

Orbital radius of a satellite $\mathrm{S}$ of earth is four times that of a communication satellite $\mathrm{C}$. Period of revolution of $\mathrm{S}$ is

The earth revolves round the sun in one year. If the distance between them becomes double, the new period of revolution will be