4.9 - Simple Machines and Work
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Practice Questions
Test your understanding with targeted questions
What is a simple machine?
💡 Hint: Think of common tools.
Name one type of simple machine.
💡 Hint: Consider devices you use every day.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary function of a simple machine?
💡 Hint: Think about what simple machines do.
True or False: A lever can be used to make lifting easier.
💡 Hint: Consider how you would lift something heavy.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
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.
💡 Hint: 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?
💡 Hint: Remember the MA formula.
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