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Moments and pressure

4 lessons in Forces.

36 exam questions · 93 marks

5.8 Moments, levers and gears Moments as the turning effect of a force, M = Fd, the principle of moments for balanced objects, and how levers and gears act as force multipliers. For Separate Science. Separate only AQA Edexcel OCR 5.9 Pressure Pressure as force per unit area, the equation p = F/A, and how the size of the contact area changes the pressure in everyday situations. For Separate Science. Separate only AQA Edexcel OCR 5.10 Pressure in liquids and upthrust Higher tier: how pressure in a liquid increases with depth and density, p = h rho g, and how the difference in pressure produces upthrust, floating and sinking. For Separate Science. Higher only Separate only AQA Edexcel OCR 5.11 Atmospheric pressure The atmosphere as a thin layer of air, how atmospheric pressure is caused by air molecules colliding with surfaces, and why it decreases with height. For Separate Science. Separate only AQA Edexcel OCR