How Do You Calculate Work Done by a Variable Force from a Graph?

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SUMMARY

The discussion focuses on calculating work done by a variable force using graphical methods. Participants confirm that work is determined by integrating the force function with respect to distance, specifically between x=0 and x=2. The integral can be estimated using the area under the curve of the force versus distance graph, which is represented by squares in this case. The solutions provided include specific values for work done, indicating the importance of accurate integration techniques.

PREREQUISITES
  • Understanding of integral calculus, specifically definite integrals.
  • Familiarity with force and distance concepts in physics.
  • Ability to interpret graphical data, particularly force versus distance graphs.
  • Knowledge of basic physics equations related to work and energy.
NEXT STEPS
  • Study techniques for estimating integrals using graphical methods.
  • Learn about the trapezoidal rule for approximating area under curves.
  • Explore the concept of variable forces and their applications in physics.
  • Practice problems involving work done by variable forces using different graphical representations.
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone interested in understanding the calculation of work done by variable forces through graphical analysis.

rafaelpitta
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Homework Statement


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The solutions are:
a)2,75J
b)11,4J
c)2,76m/s
d)3,5J
e)2,84m/s

Homework Equations


The Attempt at a Solution


I'm having problemas trying to integrate to find the letter A (the work)! I just can't put the values that match with x=0 (this one I know hehehe) and x=2(this one I don't know =/ )
 
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You are correct that work done is an integral of Force with respect to distance.
As you are given a graph of F against x with squares on it, what would be the simplest way to find (estimate) the value of this integral? Say, between x=0 and x=2?
 

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