Universal Law of Gravity and Satellites

According to the Newton’s Universal Law of Gravitation, the force of gravity between two objects is directly proportional to

• The distance between the objects.

• The product of the masses of the objects.

• The gravitational constant.

• The square of the distance between the objects.

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NGSS.MS-PS2-4

According to the Newton’s Universal Law of Gravitation, the force of gravity between two objects is inversely proportional to

• the distance between the objects.

• the product of the masses of the objects

• the gravitational constant

• the square of the distance between the objects

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NGSS.HS-PS2-4

What is the reason for the motion of the Moon on its orbit?

• The gravitational force exerted on the Earth by the Moon.

• The gravitational force exerted by the Sun.

• The gravitational force exerted by the Planets.

• The gravitational force exerted on the Moon by the Earth

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NGSS.MS-PS2-4

The value of universal gravitational constant G depends on

• The nature of material of two bodies.

• The heat content of two bodies.

• The acceleration of two bodies.

• None of these.

What happen to the weight of the object if the mass of the Earth decreases one-half from its original mass without changing its radius?

• Does not change

• Decreases to one half from original weight

• Decreases to one quarter from original weight

• Increases double from original weight

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NGSS.MS-PS2-4

Newton’s Universal Law of Gravitation states that the gravitational force between two objects is directly proportional to the product of masses of the two objects and inversely proportional to

• Distance between the two objects.

• Square of the product of the body’s radii.

• Square of the distance between the centres of the two objects.

• Cube of the distance between the centres of the two objects

Which of the following statements about a geostationary satellite is true?

• It always moves from east to west.

• It remains stationary at any chosen fixed point over the Earth.

• It has a linear speed equal to the speed of a point on the Earth’s equator.

• It has the same orbital period as the Earth’s rotation on its axis.

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NGSS.HS-ESS1-4

What is the primary factor that keeps a satellite in orbit around the Earth?

• The satellite's speed

• The satellite's mass

• The gravitational pull of the Sun

• The distance from the Moon

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

According to the Universal Law of Gravitation, what happens to the gravitational force if the distance between two objects is doubled?

• It doubles

• It halves

• It becomes one-fourth

• It remains the same

Which of the following best describes a geostationary satellite?

• It orbits the Earth once every 12 hours

• It remains fixed over one point on the Earth's surface

• It moves in a polar orbit

• It orbits the Earth once every 48 hours