← 1.6 Energy, Work, Power and Machines
Measuring M.A., V.R. and efficiency
Physics · Grade 10 · about 40 minutes
A pulley-block practical: record load, effort and both distances, then compute the three numbers.
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- 9 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Work and energy
- Power, and what a machine actually does
- The simple machines
- Forms of energy and how they change
- Work when the force is at an angle
- Kinetic energy and the square of speed
- Gravitational potential energy
- Elastic potential energy
- Conserving mechanical energy
- Power in practice
- Three classes of levers
- Pulley systems
- The inclined plane and the screw
- Wheel and axle, gears and pulley belts
- Hydraulic machines
- Measuring M.A., V.R. and efficiency
- Efficiency, friction and a heavier load
- Machines around Kenya