Finding the work done by a force

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SUMMARY

The discussion centers on calculating the work done by the force vector F(x,y,z) = xy i + yz j + zx k along a path defined by the parametric equations x = t, y = t^2, and z = t^3 for t in the interval [0, 1]. The key to solving this problem lies in determining the position vector r(t) = t i + t^2 j + t^3 k, which is essential for performing the dot product with the force vector after substituting the parametric equations into F. Once r(t) is established, the work done can be computed using the integral of the dot product of F and dr over the specified interval.

PREREQUISITES
  • Understanding of vector calculus, specifically force vectors and work done.
  • Familiarity with parametric equations and their applications in physics.
  • Knowledge of dot products and their role in calculating work.
  • Basic integration techniques for evaluating definite integrals.
NEXT STEPS
  • Study the process of calculating work done by a force vector in vector calculus.
  • Learn how to derive position vectors from parametric equations.
  • Explore the concept of line integrals in the context of physics.
  • Practice problems involving dot products and integration of vector fields.
USEFUL FOR

Students studying physics or engineering, particularly those focusing on mechanics and vector calculus, will benefit from this discussion.

stevecallaway
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Homework Statement


Find the work done by the fore F(x,y,z)=xy i = yz j + zx k

Homework Equations



z=t^3, y=t^2 x=t
0<=t<=1

The Attempt at a Solution


I don't understand how to get started because I've got no r(t) so I have nothing to dot product the F(x(t),y(t),z(t)) once the substitution occurs. Does anyone know how to get to the r(t)?
 
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r(t) = x i + y j + z k= t i + t^2 j + t^3 k.
 

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