List of top Physics Questions on Gravitation asked in KEAM

A planet has an escape speed of 10km/s,The radius of the planet is 10,000km. The acceleration due to gravity of the planet at its surface is:

Two satellites A and B are moving around the earth in a circular orbit of radius 2R,respectively. If the kinetic energy of the satellite A is two-times the kinetic energy of the satellite B,the ratio of their masses (m_A:m_B) is:

The minimum speed at which an object of 1 kg mass is thrown from the surface of the moon so that it does not fall back to the moon is

Weight of a body of mass m in its fall above the surface of the earth is

Two satellites A and B are orbiting a planet in circular orbits with radii 2R and R respectively. If the speed of satellite A is 2v, then the speed of satellite B is

Two planets A and B have the same average density. Their radii $R_A$ and $R_B$ are such that $R_A : R_B = 3 : 1$. If $g_A $ and $g_B$ are the acceleration due to gravity at the surfaces of the planets, the $g_A : g_{B}$ equals

Orbital velocity of earth satellite does not depend on

The height of a geostationary satellite is

A comet orbits around Sun in an elliptical orbit. Which of the following quantities remains constant during the course of its motion?

According to Kepler's law of planetary motion if $ T $ represents time period and $ r $ is orbital radius, then for two planets these are related as :

A stone falls freely from rest from a height $h$ and it travels a distance $\frac{9h}{25}$ in the last second. The value of $h$ is

An astronaut experiences weightlessness in a space satellite. It is because

If a body of mass m has to be taken from the surface of earth to a height $h = R$, then the amount of energy required is ($R$ = radius of earth)

If V is the gravitational potential on the surface of the earth, then what is its value at the centre of earth?

If the mass of moon is $ \frac{1}{90} $ of earths mass, its radius is $ \frac{1}{3} $ of earths radius and if $ g $ is acceleration due to gravity on earth, then the acceleration due to gravity on moon is ...... :

Two identical spheres of radius $R$ made of the same material are kept at a distance $d$ apart. Then the gravitational attraction between them is proportional to

What is the escape velocity for a body on the surface of a planet on which the acceleration due to gravity is $(3.1)^2 ms^{-2}$ and whose radius is 8100 km?

Infinite number of masses, each $ 1 \,kg $ , are placed along the $ x-axis $ at $ x=\pm \text{ }1\text{ }m,\pm 2m,\pm \text{ }4 $ $ m,\pm \text{ }8\text{ }m,\pm \text{ }16m.... $ The magnitude of the resultant gravitational potential in terms of gravitational constant $ G $ at the origin $ (x=0) $ is

A satellite is launched in a circular orbit of radius $ R $ around the earth. A second satellite is launched into an orbit of radius $ 1.01\,R $ . The period of second satellite is longer than the first one (approximately) by