Newton's Law of Gravitation

Newton said that any two masses will...

• combine into a larger mass.

• attract each other.

• create gravitational fields.

• push each other apart.

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The value of Universal Gravitational constant is

• 6.673X10^-11 Nm^-2kg²

• 6.673X10^-11 Nm²kg²

• 6.673X10^-11 Nm² kg^-2

• 6.673 x10^-11 N m^-2 kg^-2

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Which of the following Laws of Kepler did Newton use to calculate the force of attraction?

• Sun is situated at the centre of the orbit

• The orbit of the planet is ellipse

• The cube pf the mean distance of a planet from the sun is proportional to the square of its orbital period.

• The line joining the planet and the sun sweeps equal areas in equal interval of time.

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The SI unit of G

• Ncm²/kg²

• Nm²kg²

• Nm²/kg²

• Nkg/m²

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Force of gravity is directly proportional to

• Mass

• Weight

• Distance

• Time

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What is the force that causes objects to fall to Earth?

• Air resistance

• Gravity

• Water resistance

• Pressure

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What does Newton's Law of Gravitation state about the force between two masses?

• It is inversely proportional to the square of the distance between them.

• It is directly proportional to the square of the distance between them.

• It is inversely proportional to the product of their masses.

• It is directly proportional to the distance between them.

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Which of the following is the formula for Newton's Law of Gravitation?

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What is the role of the gravitational constant (G) in Newton's Law of Gravitation?

• It determines the strength of the gravitational force.

• It measures the mass of the objects involved.

• It calculates the distance between two objects.

• It defines the speed of light in a vacuum.

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If the distance between two objects is doubled, how does the gravitational force between them change according to Newton's Law?

• It becomes four times stronger.

• It becomes half as strong.

• It becomes one-fourth as strong.

• It remains the same.

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