Newton's law of universal gravitation
Grade 11 Science Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
A space probe feels a pull of 36 N from a planet. If its distance from the planet's center becomes 2 times as large, what pull does it feel, Ari?
A space probe feels a pull of 80 N from a planet. If its distance from the planet's center becomes 4 times as large, what pull does it feel, Bo?
A space probe feels a pull of 72 N from a planet. If its distance from the planet's center becomes 3 times as large, what pull does it feel, Esme?
Read this first
Use this
Orbit diagram (NASA fact sheets).
In the diagram, how do Earth's pull on the Moon and the Moon's pull on Earth compare, Jun?
- The Moon's pull is bigger, since the Moon is smaller
- Earth's pull is bigger, since Earth has more mass
- Equal in size, opposite in direction
In the diagram, which distance goes into F = Gm₁m₂ ÷ r², Kira?
Use the picture in question 4.
- 384,400 km, center to center
- The gap between their surfaces
- Earth's radius
One of two masses doubles at the same distance. What happens to the gravitational force between them, Milo?
- It doubles
- It halves
- It is 4 times as big
Both masses double at the same distance. What happens to the gravitational force between them, Noah?
- It stays the same, since both changed
- It is 4 times as big
- It doubles
Which pairs of objects attract each other by gravity, Ren?
- Every pair of objects with mass
- Objects that are touching
- Planets and stars, but not small things
Why don't two boxes on a table visibly pull together, Tala?
- The table blocks gravity
- Their pull on each other is far too small to notice
- Gravity doesn't act between small objects
G = 6.674 × 10⁻¹¹ N·m²/kg². What does its tiny size tell you, Zee?
- G is the same as g
- Gravity between everyday masses is very weak
- Gravity is strong between small objects