- #1

Fantom

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## Homework Statement

The special-purpoise milling cutter is subjected to the force of 1040 N and a couple of 211 N·m as shown. Determine the moment of this system about point O.

(Let's laugh at the text's typo)

## Homework Equations

Mo = R x F + (Couple)

## The Attempt at a Solution

I'm having a little difficulty with this... And I'm not sure why... I've done a question with the same question, different numbers and continue to get the right answer.

Anyways...

Mo = (0 - 654.5 * .265)i - (.21 * -808.2)j + (.21 * 654.5)k + <0, 211sin39, -211cos39>

This gave me... <-173i, 302j, -26.5k>

The "302j" is correct, the others are not. Not sure where I went wrong.~~~

Image: http://imgur.com/NB1zpeS