Rotational Inertia
St. Mary's U. Astronomy and Physics Dept.
Newtonian Collider
St. Mary's U. Astronomy and Physics Dept.
School blocks YouTube? Use the file below.
Action/Reaction
- NASA
(right click, save as)
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"Which way is the skater below moving?" |
3rd Law of Motion
For every action there is an equal but opposite reaction |
"Press on a rock and the rock
presses on you
(with an equal, but opposite force)"
- Newton
| When object A exerts a force on object B, Object B exerts an equal force on A but in the opposite direction |
Forces Always
Come in Pairs
Collisions and
3rd Law
St. Mary's Physics
A lamp applies a force of 10 N to a table.
What force does the table
apply on the lamp?
Which direction is this force applied?
UP
Earth pulls
down on you.
That's half the story...
You pull up on the earth. Equal. Opposite.
Explain this phenomena using one or more
of Newton's Laws of Motion
Magnetically Coupled Pendula 2
School Blocks YouTube? Use the file below.
Magnetically Coupled Pendula 2.mov
The more active bouncing magnet applies a force on the slower magnet on the opposite side. By applying a force it receives a force and therefore slows down.
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Free Body
Diagrams |
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