Newton's Law of Universal 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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What is the formula for Newton's Law of Universal Gravitation?

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Which of the following best describes the gravitational force according to Newton's Law of Universal Gravitation?

• It is a repulsive force between two masses.

• It is an attractive force between two masses.

• It is a force that only acts on planets.

• It is a force that only acts 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 twice as strong.

• It becomes half as strong.

• It becomes one-fourth as strong.

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Which of the following is a real-world application of Newton's Law of Universal Gravitation?

• Calculating the force needed to lift a book.

• Determining the orbit of a satellite around Earth.

• Measuring the speed of light in a vacuum.

• Calculating the energy produced by a chemical reaction.

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

• It determines the speed of light.

• It is a proportionality factor in the gravitational force equation.

• It measures the mass of an object.

• It calculates the energy of a system.

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How does Newton's Law of Universal Gravitation explain the tides on Earth?

• The gravitational pull of the Sun causes the tides.

• The gravitational pull of the Moon causes the tides.

• The gravitational pull of Mars causes the tides.

• The gravitational pull of Jupiter causes the tides.

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