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 -
**dara**, Wednesday, November 2, 2016 at 3:25pm
A wrench 0.4 meters long lies along the positive y-axis, and grips a bolt at the origin. A force is applied in the direction of ⟨0,1,5⟩ at the end of the wrench. Find the magnitude of the force in newtons needed to supply 100 newton-meters of torque to the bolt.

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