Simple Machines: Lever
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| resistance force | force of gravity
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| fulcrum | pivot point
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| lever | a bar that can turn on a fixed point
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| resistance or load | the object being moved
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| force | any push or pull on an object
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| a lever can be used to multiply the ___ or change the ___ of the force | force, direct
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| the _____ on the machine may be due to the force of gravity, friction, and inertia | resistance force
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| in a ___ class lever, the load is placed between the force and the fulcrum | second
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| a ___ class lever the force applied between the fulcrum and the load | third
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| using a __ class lever, the force changes directions | first
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| how many classes of levers are there | three
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| which of the following is an example of a second-class lever | wheelbarrow
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| which of the following is an example of a first-class lever | crowbar lifting lid off box
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Created by:
smileyk
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