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If the earth stops rotating, the weight of a body shall

become zero

remain unaffected

increase

decrease

Acceleration due to gravity would be maximum

at the centre of earth

on the surface of earth

at a height of 100 km from the surface of earth

at a depth of 100 km from the surface of earth.

/

gp = 1/2ge

gp = ge

gp = 2ge

gp = 4 ge

Imagine that the diameter of the earth becomes twice its present value but its mass remains unchanged. Then the weight of an object on its surface will become _____________ the present value

one-half

one-fourth

three-fourth

remain unchanged

Weightlessness experienced while orbiting the earth in spaceships is the result of

inertia

acceleration

zero gravity

pull by other planets

AN artificial satellite stays in orbit around the earth. This may be attributed to

upward pull of the satellite

negligible earth’s gravitational field

centripetal force provided by earth’s gravitational acceleration

equilibrium between forces of attraction due to earth and other planets

The gravitational field due to a mass distribution is in the x-direction. (K is a constant). Taking the gravitational potential to be zero at infinity, its value at a distance x is _____.

K/x

K/2x

The masses and radii of the earth and moon are and respectively. Their centres are distance d apart. The minimum velocity with which a particle of mass m should be projected from a point midway between their centres so that it escapes to infinity is _____.

The escape velocity of a rocket launched from the surface of the earth ____.

Does not depend on the mass of the rocket

Does not depend on the mass of the earth

Depends on the mass of the planet towards which it is moving

Depends on the mass of the rocket

In some region, the gravitational field is zero. The gravitational potential in this region _____.

Must be variable

Must be constant

Cannot be zero

Must be zero

become zero

remain unaffected

increase

decrease

Acceleration due to gravity would be maximum

at the centre of earth

on the surface of earth

at a height of 100 km from the surface of earth

at a depth of 100 km from the surface of earth.

/

gp = 1/2ge

gp = ge

gp = 2ge

gp = 4 ge

Imagine that the diameter of the earth becomes twice its present value but its mass remains unchanged. Then the weight of an object on its surface will become _____________ the present value

one-half

one-fourth

three-fourth

remain unchanged

Weightlessness experienced while orbiting the earth in spaceships is the result of

inertia

acceleration

zero gravity

pull by other planets

AN artificial satellite stays in orbit around the earth. This may be attributed to

upward pull of the satellite

negligible earth’s gravitational field

centripetal force provided by earth’s gravitational acceleration

equilibrium between forces of attraction due to earth and other planets

The gravitational field due to a mass distribution is in the x-direction. (K is a constant). Taking the gravitational potential to be zero at infinity, its value at a distance x is _____.

K/x

K/2x

The masses and radii of the earth and moon are and respectively. Their centres are distance d apart. The minimum velocity with which a particle of mass m should be projected from a point midway between their centres so that it escapes to infinity is _____.

The escape velocity of a rocket launched from the surface of the earth ____.

Does not depend on the mass of the rocket

Does not depend on the mass of the earth

Depends on the mass of the planet towards which it is moving

Depends on the mass of the rocket

In some region, the gravitational field is zero. The gravitational potential in this region _____.

Must be variable

Must be constant

Cannot be zero

Must be zero

This test will help you to prepare for AIEEE and IIT JEE exams.

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