Table of Contents Chapter: Work and Simple Machines Section 1: Work and ...
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Chapter: Work and Simple Machines Section 1: Work and Power Section 2: Using Machines Section 3: Simple Machines
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1 What is work?
? Work is done when a force causes an object to move in the same direction that the force is applied.
? Maybe it would help to know that you do work when you lift your books, turn a doorknob, raise window blinds, or write with a pen or pencil.
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1 Work and Motion
? In order for you to do work, two things must occur.
? First, you must apply a force to an object.
? Second, the object must move in the same direction as your applied force.
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1 Work and Motion
? You do work on an object only when the object moves as a result of the force you exert.
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1 Applying Force and Doing Work
? To do work, an object must move in the direction a force is applied.
? The boy's arms do work when they exert an upward force on the basket and the basket moves upward.
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