Gravitation
Physics ⇒ Mechanics
Gravitation starts at 9 and continues till grade 12.
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See sample questions for grade 10
Describe the difference between mass and weight.
Explain why objects in a vacuum fall at the same rate regardless of their mass.
Explain why the value of g decreases as we move from the equator to the poles.
If the distance between two objects is tripled, by what factor does the gravitational force between them change?
If the mass of one object is doubled, how does the gravitational force between two objects change, assuming the distance remains the same?
If the radius of the Earth were to suddenly double, but its mass remained the same, what would happen to the value of g at the surface?
State one reason why the value of g is less on the Moon than on Earth.
A satellite is orbiting the Earth at a height where the acceleration due to gravity is 2.45 m/s². If the mass of the satellite is 1000 kg, what is its weight at that height?
Which of the following best describes the path of a planet around the Sun according to Newton's law of gravitation? (1) Circular (2) Elliptical (3) Parabolic (4) Hyperbolic
Which of the following best explains why astronauts feel weightless in orbit? (1) There is no gravity in space. (2) They are too far from Earth. (3) They are in free fall around the Earth. (4) Their mass becomes zero.
Which of the following is NOT affected by gravity? (1) The motion of the Moon around the Earth (2) The falling of an apple from a tree (3) The orbit of satellites (4) The speed of light in a vacuum
Which of the following is the correct SI unit for gravitational potential energy? (1) Newton (2) Joule (3) Watt (4) Pascal
Fill in the blank: The acceleration due to gravity on the surface of the Earth is approximately ________ m/s².
Fill in the blank: The force of gravity acting on an object is called its ________.
Fill in the blank: The force that keeps the planets in orbit around the Sun is called ________.
Fill in the blank: The gravitational potential energy (U) of a mass m at a height h above the ground is given by U = ________.
Does the mass of an object affect its acceleration due to gravity on Earth?
True or False: The gravitational force between two objects depends only on their masses and the distance between them.
True or False: The gravitational force between two objects increases as the distance between them increases.
True or False: The gravitational force is always attractive.
