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Unformatted text preview: the force. So pushing against a wall might take a lot of effort, but doesn’t do any work. When a force is constant, work can be found by multiplying the magnitude of the force by the change in distance. But forces do not have to be constant. To find the work done using a variable or changing force you have to use calculus. F ( x ) means the force at a particular x-value. It’s a notational way of saying “changing force.” Notice that the integral looks a lot like the formula for a constant force. The force is multiplied by a change in distance, this time dx . The integral sums up all the infinite little pieces....
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This note was uploaded on 04/27/2010 for the course MATH 172 taught by Professor Hyon during the Spring '10 term at Community College of Denver.
- Spring '10