3 practice sets · Page 1 of 1
What happens to the gravitational force if the distance between two objects is halved?
It becomes half
It becomes four times
It remains unchanged
It becomes double
Correct Answer: B — It becomes four times
Explanation:
Gravitational force varies inversely with the square of distance.
What is the gravitational force between two objects with masses m₁ and m₂ separated by a distance r?
F = G(m₁ × m₂)/r²
F = G(m₁ + m₂)/r
F = Gm₁m₂ × r²
F = G/r²
Correct Answer: A — F = G(m₁ × m₂)/r²
Explanation:
Newton's law of gravitation is F = G(m₁m₂)/r².
What is the force of attraction between two masses called?
Gravitational force
Electromagnetic force
Frictional force
Nuclear force
Correct Answer: A — Gravitational force
Explanation:
The attractive force between masses is called gravitational force.
