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5 cards from this section. Quick, good the night before a test.
What is the mechanical advantage of a fixed pulley?
Think about the effort needed to lift the load.
True or False: A movable pulley can reduce the effort needed to lift a load.
Consider how pulleys change the amount of effort used.
What is the mechanical advantage of a fixed pulley?
Remember how fixed pulleys work.
True or False: Movable pulleys have an efficiency greater than 100%.
Consider the effects of friction on machinery.
A fixed pulley system is used to lift a 100 kg load. If the pulley is frictionless, calculate the force needed to lift the load.
Use the formula for weight (W = mg).
A movable pulley is used to lift a load of 200 kg. If the mechanical advantage is 2, what is the force required to lift this load and what distance will the effort travel compared to the load?
Consider mechanical advantage and how it relates to force and distance.
6 more questions in this section. Enroll free to practise them all.
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