Two balls are placed on a flat table. Why do they not move towards each other?

The friction is large enough to overcome the tiny gravitational force

When in its orbit is the gravitational force the weakest

When it is furthest from the sun

What does G represent?

The gravitational constant 6.67x10-11

Compare the acceleration of Jupiter because of the Sun to the acceleration of the Sun because of Jupiter.

The acceleration of Jupiter is larger than the acceleration of the Sun

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Universal Gravitation and Kepler's Laws

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#physics #circular motion #kepler's laws

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Questions 9

Answers

1
Two balls are placed on a flat table. Why do they not move towards each other?
There is no gravitational force between them
The gravitational force between the balls and the Earth is too large
They would move towards each other in this situation
The friction is large enough to overcome the tiny gravitational force
2
When in its orbit is the gravitational force the weakest
When it is closest to the sun
When it is somewhere between the closest and furthest points
When it is furthest from the sun
it has a constant force
3
You want to use Kepler's 3rd Law to find the period of Mercury. Which of the following objects should you compare it to?
Sagittarius A*
Venus
The Sun
The Moon
4
Compare the force on Jupiter because of the Sun to the force on the Sun because of Jupiter.
The force on Jupiter is larger than the force on the Sun
The force on Jupiter is smaller than the force on the Sun
The forces are the same
More information is needed
5
When in its orbit is a planet moving fastest
it has a constant velocity
When it is furthest from the sun
When it is closest to the sun
When it is somewhere between the closest and furthest points
6
What does G represent?
The gravitational acceleration on Earth 9.8
It depends on the situation
The gravitational force between two objects
The gravitational constant 6.67x10-11
7
Compare the acceleration of Jupiter because of the Sun to the acceleration of the Sun because of Jupiter.
More information is needed
The acceleration of Jupiter is smaller than the acceleration of the Sun
The accelerations are the same
The acceleration of Jupiter is larger than the acceleration of the Sun
8
Two objects are attracted to each other with a force F.If the distance between them reduced to a third, the new force is
F
1/3 F
1/9 F
9 F
9
Two objects are attracted to each other with a force F. If one mass is tripled and one is halved, the new force is
2 F
3 F
2/3 F
3/2 F

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