Mechanical Devices and Movement
Analysing levers, linkages, cams, gears, pulleys and related devices that transmit or transform motion, force, direction and speed.
How to prepare for the GCSE Design and Technology written exam
Move from requirement to evidence, technical principle, comparison and justified decision. Use current board materials separately for the NEA and for full timed-paper rehearsal.
Core concepts
Concept 1
Mechanical devices can transmit motion or transform its type, direction, magnitude, speed or distance.
Exam cue: Identify input motion and output motion before naming the device's effect.
Concept 2
Levers trade force and movement through distances from a pivot, while gear and pulley ratios relate input and output rotation under idealised assumptions.
Exam cue: Show driver and driven quantities, ratio direction and units in calculations.
Concept 3
Friction, backlash, slip, wear, alignment and efficiency affect real behaviour and should temper conclusions drawn from ideal calculations.
Exam cue: State the practical loss or limitation after an ideal mechanical prediction.
Risk pitfalls and guardrails
Reversing driver and driven terms in a ratio.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Assuming a gain in force occurs without a corresponding trade-off in speed or distance.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Calling every oscillating output reciprocating motion.
Guardrail: Do not substitute one board's specialist route or current product claim for the multi-board core, and do not turn written process knowledge into NEA or practical submission material.
Memory anchors
Rotary motion
Movement around an axis.
Linear motion
Movement along a straight path.
Reciprocating motion
Repeated back-and-forth movement along a line.
Oscillating motion
Repeated movement through an arc.
Mechanical advantage
The ratio of output force to input force under stated conditions.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What does a lever do?
In a first-class lever, where is the pivot?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
What is Pass Harbor?
Completely free exam prep for 247 UK exams.
- Practice questions
- Flashcards
- Study guides
- Mock exams
- No registration
- No paywall
- Start instantly
“No more expensive exam prep. Quality study tools should be accessible to everyone.”