‹ Science Essentials
Forces, work, elasticity, moments and pressure
Weight and resultant forces, work done, stretching springs and their required practical, moments, levers and gears, and pressure in fluids.
Start: Forces, mass and weight About 14 min
Lessons
Practice and tests
By the end you can
Use W = mg and tell mass from weight Find resultant forces, draw free body diagrams and resolve a force (Higher) Calculate work done with W = Fs Use F = ke and ½ke², and carry out the spring required practical Use the principle of moments for levers and gears (Physics only) Calculate pressure with p = F/A and p = hρg, and explain upthrust (Physics only) Helps with: GCSE (AQA, Edexcel, OCR)
Next unit: Forces and motion Previous unit: Atomic structure and radioactivity
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