http://www.ck12.org Chapter 4. Motion and Forces
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Watch video number 15 at the following URL, and then answer the questions below.
http://www.animatedscience.co.uk/flv/
- If you apply 600 N of input force to a single fixed pulley, the output force is __, and the mechanical
advantage of the pulley is __. - To get an output force of 600 N with a single moveable pulley, you must apply an input force to the pulley of
__, and the pulley’s mechanical advantage is __. - If you apply an input force of 200 N to a pulley system has three rope segments lifting the load, then the output
force is __, and the mechanical advantage is __.
Review
- What is a pulley? What work do pulleys do?
- Compare and contrast pulleys A and B in the illustration below.
- In the compound pulley pictured below, how many Newtons of force are applied to the load if 200 Newtons
of effort force are applied to the pulley? - How would you construct a compound pulley with an ideal mechanical advantage of 6?