Gravitation Questions with Solutions

This topic covers Newton's law of universal gravitation, the acceleration due to gravity and how it varies, mass and weight, escape velocity, orbital velocity, satellites, Kepler's laws and weightlessness. Common questions ask how the value of g changes with height, depth and latitude (it is greatest at the poles and zero at the centre of the Earth), the Earth's escape velocity (about 11.2 km/s), and why astronauts feel weightless. Remember that mass stays the same everywhere, while weight changes with gravity. Practise the gravitation questions below, written in the style of the general awareness sections of exams such as SSC, banking, railways, CUET GAT, MAH CET and CLAT. Each question comes with a detailed explanation that adds related facts, so every question helps you revise more than one point.