Physics : Multiple-Choice Questions on Gravitation

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Physics: Multiple Choice Questions on Gravitation

If the distance between two masses is increased by a factor of 5, the gravitational force of attraction between them will

reduce by a factor of 25

reduce by a factor of 5

remain Same

increase by a factor of 5

If a simple pendulum with a time period of 6 seconds is made to oscillate at a height R equal to the Earth's radius, then its time period at this height will be

6 s

1 / 6 s

12 s

1 / 12 s

An Earth satellite of mass m revolves at a height h from the surface of the Earth. If R is the Earth's radius and g is the acceleration due to gravity at the surface of the Earth, then the velocity of the satellite is given by

A satellite is moving around the Earth in a circular orbit with a velocity V. If the gravitational force of the Earth were to suddenly disappear, then the satellite would

move with a velocity V, tangentially to its circular orbit.

move radially outwards with a velocity V.

fall towards the surface of the Earth.

spirally move away from the Earth.

A reference frame attached to the Earth

is an inertial frame because Newton's laws of motion are applicable inside it.

is not an inertial frame because the Earth moves with respect to the Sun.

is an inertial frame by definition.

cannot be an inertial frame of reference because of the Earth's rotation and revolution.

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