Embibe Experts Solutions for Chapter: Gravitation, Exercise 1: Maharashtra Board-2019

State Kepler’s law of orbit and law of equal areas.

What is the decrease in weight of a body of mass $500 kg$ when it is taken into a mine of depth $1000 km$?

(Radius of earth $R = 6400 km$, $g = 9.8 m/s^2$)

Define binding energy and obtain an expression for binding energy of a satellite revolving in a circular orbit round the earth.

At what height the acceleration due to gravity is$25\%$ of that at the surface of the Earth, in terms of radius of the Earth.

State Newton’s law of gravitation. Obtain the relation between universal gravitational constant and gravitational acceleration on the surface of the earth.