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EnglandProduct Design and TechnologiesQuick questions
Systems and mechanisms
Quick questions on Mechanical devices and motion: levers, linkages and cams - Edexcel A-Level Product Design
4short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What are linkages?Show answer
A linkage joins rigid links with pivots to change the direction or magnitude of motion. A reverse-motion linkage makes the output move opposite to the input; a bell crank changes the direction of motion through an angle (for example 90 degrees); a push-pull (parallel) linkage keeps two parts moving together. Linkages are used in folding products, controls and toys.
What is q1?Show answer
State the four types of motion. [2 marks]
What is q2?Show answer
A first-class lever has the load m from the fulcrum and the effort m from the fulcrum. What effort balances a N load? [2 marks]
What is q3?Show answer
Explain what a cam and follower mechanism does. [2 marks]
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