List of top Physics Questions on Newtons law of gravitation asked in KEAM

The ratio of the escape velocities from the surface of two planets having densities and radii in the ratio 2 : 1 and 1 : 2 respectively is

The height at which the weight of a body becomes one third of its weight on the surface of earth is (R is the radius of earth)

There is a mine of depth about \( 3.0 \,\text{km} \). Conditions prevailing in this mine as compared to those at the surface of earth are

Two bodies of masses \(m\) and \(4m\) are kept at a distance of \(x\). The distance on the axial point from \(m\) at which the gravitational field is zero is

Two identical objects each of mass \(50\) kg are kept at a distance of \(50\) cm apart on a horizontal table. The net gravitational force at the mid-point of the line joining their centres is

The ratio of the weight of a body at a height of \(\dfrac{R}{10}\) from the surface of the earth to that at a depth of \(\dfrac{R}{10}\) is \((R\) is radius of earth\()\)

A spherically uniform planet of mass \( 8 \times 10^{24} \) kg and of radius \( 6 \times 10^6 \) m is orbiting around the Sun. The escape velocity for the planet is close to (Take \( G = 6 \times 10^{-11} \text{ N m}^2\text{kg}^{-2} \)) (A) 11.2 km/s

Assuming the mass of Earth to be ten times the mass of Mars and its radius to be twice the radius of Mars and the acceleration due to gravity on the surface of Earth to be $10$ m/s$^2$, the acceleration due to gravity on the surface of Mars is

A body hanging from a massless spring stretches it by 3 cm on earth's surface. At a place 800 km above the earth's surface, the same body will stretch the spring by (Radius of earth = 6400 km)

The acceleration due to gravity on the surface of a planet is one-fourth of the value on earth. When a brass ball is brought to this planet, its