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An Introduction to Mechanisms
1 Homework Tasks
Task 1: Research It
i) Find two examples for each of the three classes of lever (6 examples in total).
ii) Find an image of 1 example for each class of lever above (3 in total) and label where the fulcrum/pivot, effort and load are.
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Task 2: Calculate It
- Calculate the answers to the following problems involving gear ratios:
- A driver pulley has a diameter of 200mm and rotates with a speed of 30rpm. Calculate the speed of a driven pulley with a diameter of 100mm.
- A driver pulley has a diameter of 80mm and rotates with a speed of 50rpm. Calculate the speed of a driven pulley with a diameter of 100mm.
- A driver pulley has a diameter of 50mm and rotates with a speed of 10rpm. Calculate the required diameter of a driven pulley if we want it to rotate at 50rpm.
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