The strongman lifts the pig by pulling down at position 1. How will the distance that he pulls down compare to the distance that
the pig moves up?
Question options:
The distance that the pig moves up will be more than the distance that the strongman pulls down.
The distance that the pig moves up will be the same as the distance that the strongman pulls down.
The distance that the pig moves up will be less than the distance that the strongman pulls down.
It is impossible to tell from this picture.
Question options:
The distance that the pig moves up will be more than the distance that the strongman pulls down.
The distance that the pig moves up will be the same as the distance that the strongman pulls down.
The distance that the pig moves up will be less than the distance that the strongman pulls down.
It is impossible to tell from this picture.
2 answers:
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Answer:
The surface gravity g of the planet is 1/4 of the surface gravity on earth.
Explanation:
Surface gravity is given by the following formula:
So the gravity of both the earth and the planet is written in terms of their own radius, so we get:
The problem tells us the radius of the planet is twice that of the radius on earth, so:
If we substituted that into the gravity of the planet equation we would end up with the following formula:
Which yields:
So we can now compare the two gravities:
When simplifying the ratio we end up with:
So the gravity acceleration on the surface of the planet is 1/4 of that on the surface of Earth.