The escape velocity from earth is 11.2 km/s. If a body is to be projected in a direction making an angle 45^o to the vertical, then the escape velocity is

The period of revolution of planet A around the sun is 8 times that of B. The distance of A from the sun is how many times greater than that of B from the sun?

If the gravitational force between two object were proportional to ¹/R (and not as ¹/R²), where R is separation between them, then a particle in circular orbit under such a force would have its orbital speed v proportional to

A body attains a height equal to the radius of the earth. The velocity of the body with which it was projected is

A body of mass m is placed on earth's surface. It is then taken from earth's surface to a height h = 3R, then the change in gravitational potential energy is

For a satellite escape velocity is 11 km/s. If the satellite is launched at an angle of 60^o with the vertical, then escape velocity will be

A planet is moving in an elliptical orbit around the sun.If T, U, E and L stand for its kinetic energy, gravitational potential energy, total energy and magnitude of angular momentum about the centre of force, which of the following is correct?

The escape velocity of a sphere of mass m is given by (G = universal gravitational constant, M_e = mass of earth and Re = radius of earth)

The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet B. A man jumps to a height of 2m on the surface of A. What is the height of jump by the same person on the planet B?

The satellite of mass m is orbiting around the earth in a circular orbit with a velocity v. What will be its total energy?