- #1

zachdr1

- 91

- 0

## Homework Statement

How do you find the derivative of the radial vector r

## Homework Equations

r [/B]= r

**u'_r**+ r

**u_r**

[tex]

**r =**\frac{dr}{dt}

**u_r**+ r\frac{d

**u_r**}{dt} [/tex]

can't get latex to work either

## The Attempt at a Solution

[/B]

If r is the magnitude of

**r**, how would you find the derivative of it? Wouldn't it be constant?

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