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4 cards from this section. Quick, good the night before a test.
What is a simple machine?
Think of common tools.
Name one type of simple machine.
Consider devices you use every day.
What is the primary function of a simple machine?
Think about what simple machines do.
True or False: A lever can be used to make lifting easier.
Consider how you would lift something heavy.
A worker moves a heavy crate weighing 200N using an inclined plane that is 10m long, with a height of 2m. Calculate the efficiency if he exerts a force of 80N to move it up the ramp.
Focus on the friction and input force.
If a pulley system reduces the effort needed to lift an object by a factor of 4 and you want to lift a 1200N load, how much input force do you need to apply?
Remember the MA formula.
6 more questions in this section. Enroll free to practise them all.
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