A granite rock at the surface of the Earth has density ρ. The rock is transported to the surface of another planet.
The acceleration of free fall on the surface of the other planet is twice that on the surface of the Earth.
What is the density of the rock on the other planet?
A 0.5ρ
B ρ
C 2ρ
D 4ρ
ANSWER: B
The Physics Behind
- Transporting the granite rock to another planet does not change the
- mass of the rock
- volume of the rock
- Therefore, the density which is mass divided by volume doesn't change as well.
No comments:
Post a Comment