Gravity

•

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GRAVITY

Free body diagram

Gravity
 Everything has gravitational pull.
 If it has mass it has gravity.

Mass and gravity
 Mass x Gravity = weight
◦ On earth gravity = 1G

Centre of Gravity
 Predict the centre of gravity for 2D objects

Centre of gravity
 Predict the centre of gravity for 3D objects

Why don’t they
fall over???

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Gravity

2. Free body diagram

3. Gravity  Everything has gravitational pull.  If it has mass it has gravity.

4. Mass and gravity  Mass x Gravity = weight ◦ On earth gravity = 1G

5. Centre of Gravity  Predict the centre of gravity for 2D objects

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7. Why don’t they fall over???