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Forces and Balance

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Forces and Balance

What is a force?

It is a push or pull

There are 4 major types of unseen forces:

1. Gravity

• Gravity on Earth = 9.8 m/s2

2. Magnetic

3. Weak Nuclear

4. Strong Nuclear

There are 6 contact forces:

1. Friction

2. Tension

3. Normal

4. Air Resistance

5. Applied

6. Spring

All forces are either:

1. Balanced: Not moving

2. Unbalanced: Moving

Name the forces!

Newton’s 2nd Law

• Acceleration of an object is in the same direction as the net force on an object.

• F = MA

Newton’s 3rd Law

• For every action force there is an equal and opposite reaction force.

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