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Below are the previews for the slide in Topic 9 - Forces and their Effects. If you click on them, you can see larger versions. If you are on a computer you can press the left and right arrows to move. You can also click the arrows to the left and right of the screen.

Powerpoint Description:

This PowerPoint covers: an introduction to forces, contact vs non-contact forces, vector and scalar quantities, resultant force and how to work it out, drawing scaled pictures of resultant forces, vector diagrams, balanced and unbalanced forces, free body force diagrams, turning moments, balancing a seesaw, calculating an unknown force or distance to pivot, the principle of moments, levers and gears and how they work, reducing unwanted energy transfers.

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