Physics GK · all questions

Gravitational Force
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Q101

If the distance between two objects is doubled, what will be the effect on the force between them?

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Q102

The mass of an object is 20 kg, what will be the weight of that object on the Earth? [g = 9.8ms^-s]

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Q103

The acceleration due to gravity is maximum at . . . . . . . .

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Q104

Satellite is kept moving in its orbit around the Earth; it is due to

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Q105

The weight of an object is 6000N on Earth. What will be its weight on the surface of the Moon?

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Q106

What is the force of gravitational exerted on an object?

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Q107

Where can a geostationary satellite be installed?

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Q108

Unit of 'g', same as unit of acceleration, i.e. is . . . . . . . .

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Q109

Escape velocity at the Earth's surface is

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Q110

Consider the following statements.
1. Geostationary satellites are used to reflect TV signals and telecast TV programmes from one part of the world to another.
2. Polar satellites are used for weather forecasting.
Which of the statements given above is/are correct?

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Q111

Approximate escape velocity on the surface of the Earth.

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Q112

An object was thrown upwards at a speed of 14m/s and find 10m height. Calculate the time taken by the object to reach the highest point.

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Q113

Why does a stone thrown towards the sky return to the earth?

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Q114

The force of gravity exists between . . . . . . . . objects, but cannot be felt until the mass of objects, such as planets, is very high-

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Q115

Consider the following statements.
1. The time period of satellite does not depend on the radius of the orbit.
2. The orbital velocity is inversely proportional to the square root of the radius of the orbit.
3. The orbital velocity of a satellite increases with the radius of the orbit.
Which of the statement(s) given above is/are correct?

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Q116

The force of gravity between of two objects is F. If the mass of objects is halved without changing their distance, the gravitational force will be:

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Q117

The weight of a body at the center of the Earth will be:

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Q118

The radius and mass of a planet are half of the Earth's radius and mass. What will be the value of g on this planet?

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Q119

When an object reaches its top when thrown upwards, its-

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Q120

The kinetic energy given to the body to project it with the escape velocity is called

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