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2 cards from this section. Quick, good the night before a test.
What is a moment arm?
Think about how far the force is applied from the pivot.
True or False: A shorter moment arm decreases the amount of force needed to rotate an object.
Consider how levers work.
What is the relationship between moment arm length and torque?
Consider how leverage works.
True or False: Moment arms are only important in static systems.
Think of how forces act on moving objects.
A force of 15 N is applied at a distance of 0.8 m from a pivot. If the moment arm increases to 1.2 m, what is the new torque produced?
Use the same formula for torque.
Design a scenario where a person needs to apply at least 20 N of force at a moment arm of 0.5 m. What changes if the moment arm is increased to 2 m?
Remember the relationship between torque and moment arm.
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