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March 26, 2017

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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 - ,

    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 - ,

    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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