3-5 What are inclined planes?
OBJECTIVE: Describe how an inclined plane makes work easier.
Key Term
inclined plane: slanted surface, or ramp
Lesson Summary
• Inclined planes make work easier by changing the angle at which you have to exert force to lift resistance.
• The mechanical advantage of an inclined plane is equal to the length of the plane divided by its height.
• A wedge is usually made of two inclined planes back to back.
• A screw is an inclined plane wrapped around a cylinder.
Key Term
inclined plane: slanted surface, or ramp
Lesson Summary
• Inclined planes make work easier by changing the angle at which you have to exert force to lift resistance.
• The mechanical advantage of an inclined plane is equal to the length of the plane divided by its height.
• A wedge is usually made of two inclined planes back to back.
• A screw is an inclined plane wrapped around a cylinder.
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