Math Problem Statement

find the total work done in moving a parcticle in a force field given by F = 3x * y deg - 52 deg + 10xk along the x = 1 + t ^ 2 y = 24 ^ 2 z = f ^ 3 from 1/x = 1 + f = 2

Solution

To find the total work done in moving a particle in a force field F\mathbf{F}, we need to compute the line integral of the force field along the path given by the parametric equations:

F=3xi+yj52k+10xk\mathbf{F} = 3x \mathbf{i} + y \mathbf{j} - 52 \mathbf{k} + 10x \mathbf{k}

And the path:

x=1+t2,y=242,z=f3x = 1 + t^2, \quad y = 24^2, \quad z = f^3

The work done WW is given by:

W=CFdrW = \int_C \mathbf{F} \cdot d\mathbf{r}

Here, drd\mathbf{r} is the differential element of the curve, and F\mathbf{F} is the force field. To compute this:

  1. Parameterize the Path:

    • From the given x=1+t2x = 1 + t^2, y=242y = 24^2, and z=f3z = f^3, assume xx as the parameter: tt as xx.
    • The path in terms of xx can be written as: x=x,y=242=576,z=(x1)3/2x = x, \quad y = 24^2 = 576, \quad z = (x - 1)^{3/2}
  2. Determine the Differential drd\mathbf{r}:
    The differential of the position vector r(x)\mathbf{r}(x) is: dr=drdxdxd\mathbf{r} = \frac{d\mathbf{r}}{dx} dx Since r(x)=xi+576j+(x1)3/2k\mathbf{r}(x) = x \mathbf{i} + 576 \mathbf{j} + (x-1)^{3/2} \mathbf{k}, dr=idx+0j+32(x1)1/2kdxd\mathbf{r} = \mathbf{i} dx + 0 \mathbf{j} + \frac{3}{2}(x-1)^{1/2} \mathbf{k} dx

  3. Calculate the Dot Product Fdr\mathbf{F} \cdot d\mathbf{r}:
    The force field is given by: F(x,y,z)=3xi+576j52k+10xk\mathbf{F}(x, y, z) = 3x \mathbf{i} + 576 \mathbf{j} - 52 \mathbf{k} + 10x \mathbf{k} Substituting into the dot product: Fdr=(3x)(dx)+0+(52+10x)(32(x1)1/2)dx\mathbf{F} \cdot d\mathbf{r} = (3x)(dx) + 0 + \left(-52 + 10x\right) \left(\frac{3}{2}(x-1)^{1/2}\right) dx

  4. Integrate the Dot Product:
    The integral limits for xx are from the starting point (x=1x=1) to the ending point (calculated from 1/x=1+f=21/x = 1 + f = 2, hence x=1/3x = 1/3): W=11/3[3x+32(52+10x)(x1)1/2]dxW = \int_{1}^{1/3} \left[3x + \frac{3}{2}(-52 + 10x)(x-1)^{1/2}\right] dx

Let's evaluate this integral to find the total work WW.

(Note: There may be some mistake in your query interpretation about the limits and path so correct any error.)


Would you like to clarify the path or limits of the integral?

Follow-up Questions:

  1. Would you like to understand how to parameterize paths for line integrals in general?
  2. Are you interested in seeing the full step-by-step integration process?
  3. Do you need help with vector calculus concepts like divergence and curl related to this problem?
  4. Would you like to explore the physical interpretation of work done in a force field?
  5. Are you curious about other applications of line integrals in physics or engineering?

Tip: When dealing with vector fields and line integrals, it's crucial to clearly define the path and its parameterization to ensure accurate calculations.

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Math Problem Analysis

Mathematical Concepts

Line integrals
Vector calculus
Parametric equations

Formulas

Line integral formula
Parametric equations of a curve

Theorems

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Suitable Grade Level

Advanced undergraduate level