School Physics Forces Notes 7.  Fluids: pressure, upthrust, object floats?

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FORCES 7. Pressure and upthrust in liquids, why do objects float or sink? and variation of atmospheric pressure with height, uses of suction caps!

Doc Brown's GCSE level Physics exam study revision notes

Sub-index for this section on pressure and upthrust in liquids

7.1 Weight - upthrust - why objects float or sink in a fluid

7.2 Some 'kitchen sink' experiments on density!

7.3 Other cases of floating versus sinking in fluids (gases or liquids)

7.4 Atmospheric pressure and variation with height

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What next? Forces revision notes index

FORCES 1. What are contact forces & non-contact forces?, scalar & vector quantities, free body force diagrams

FORCES 2. Mass and the effect of gravity force on it - weight, (mention of work done and GPE)

FORCES 3. Calculating resultant forces using vector diagrams and work done

FORCES 4. Elasticity and energy stored in a spring

FORCES 5. Turning forces and moments - from spanners to wheelbarrows and equilibrium situations

FORCES 6. Pressure in liquid fluids and hydraulic systems

FORCES 7. Pressure & upthrust in liquids, why do objects float or sink in a fluid?, variation of atmospheric pressure with height


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