Gravitation: The Universal Force of Attraction Acting Between all Matter

The weight of an object can be zero but the mass of an object can never be zero.

What will be the value of acceleration due to gravity on the surface of the earth if the radius of the earth suddenly decreases to 60% of its present value, keeping the mass of the earth unchanged?

Which scientist introduced the universal law of gravitation?

A body weighs 500 N on the surface of the earth. How much would it weight half way below the surface of the earth?

The time – period of a satellite of earth is 5 hours. If the separation between the earth and the satellite is increased to 4 times the previous value, the new time – period will become

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

What would be the duration of the year if the distance between the earth and the sun gets doubled?

What happens to the gravitational potential at the centre of the uniform spherical shell which shrinks gradually?

What happens to the weight of the body if the weight becomes \(\frac{1}{16}\) at a certain. Also, consider the radius of the earth to be R.

Choose the factor on which the orbital velocity does not depend when the satellite is orbiting close to the earth’s surface

Gravitational force is _____

The value of acceleration due to gravity of earth at the equator is less than that of the poles due to _____

If a body of mass m is taken out from a point below the surface of earth equal to half the radius of earth, R, to a height R above the earths surface, then work done on it will be

What is the increase in the potential energy of the body with mass m if the body is taken at the height h which is equal to the radius of the earth?

Consider a body of mass m which needs to be moved from an orbit of radius 2R to 3R. What is the energy required