Homework Help: Calc 3

Posted by Raquel on Thursday, September 13, 2007 at 11:10pm.

A wrench .9m long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of (0,1,3) at the end of the wrench. Find the magnitude of the force in newtons needed to supply 100 J of torque to the bolt.
This is the formula i have:
T=|r x F| Can anybody point me in the right direction?

Calc 3 - nick, Friday, September 14, 2007 at 9:04am
T=100J
r=.9j
F=F (0i+1j+3k)/sq root 1^2+3^2)

Replace the values on the formula and solve for F.
Calc 3 - Anonymous, Monday, September 17, 2007 at 5:37pm
5

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