Universal Law of Gravitation

What is the easiest way to demonstrate the effect of gravitational force?

• Suspend a horizontal scale with two masses

• Drop two large masses from a height

• Push two small masses towards each other

• Place two large masses on a scale

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What did Sir Isaac Newton observe that led to the discovery of the universal law of gravitation?

• An apple falling from a tree

• Two apples falling from different trees

• Objects falling radially towards the Earth

• The Earth attracting the Moon

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According to the universal law of gravitation, how do objects fall towards the Earth?

• In a radial direction

• In a straight line

• In a circular motion

• In a random pattern

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What is the force that pulls the Moon towards the Earth?

• Centripetal force

• Frictional force

• Torsional force

• Gravitational force

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According to Newton's third law of motion, what is the relationship between the forces of attraction between two objects?

• They are equal in magnitude

• They are inversely proportional

• They are directly proportional

• They are unrelated

What is the relationship between the gravitational force and the distance between the center of two objects?

• Gravitational force increases with distance

• Gravitational force decreases with distance

• Gravitational force remains constant with distance

• Gravitational force is unrelated to distance

Does the mass of an object affect the gravitational force between two objects?

• Yes, the mass of both objects affects the force

• No, the mass of an object has no effect on the force

• Yes, only the mass of the first object affects the force

• Yes, only the mass of the second object affects the force

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What did Henry Cavendish's experiment determine?

• The value of g

• The value of the gravitational constant

• The value of the Earth's mass

• The value of the Moon's acceleration

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In a frictionless room, what would happen if two blocks were placed on the floor?

• The blocks would move towards each other

• The blocks would move away from each other

• The blocks would remain stationary

• The blocks would rotate around each other

What is the force that balances the gravitational attraction force in Henry Cavendish's experiment?

• Torsional force

• Centripetal force

• Frictional force

• Spring force

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