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BIOPSYCH
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Homework Statement
A force of F = (3.00 i - 2.00 j) N acts at a location r = (1.00 i + 2.00 j) m on an object. What is the magnitude of the torque that this force applies about an axis through the origin perpendicular to the xy plane?
Homework Equations
Torque is equal to the cross product of the position (vector r) and the Force (vector F).
The Attempt at a Solution
I took the cross product and obtained 0 i + 0 j - 8 k.
Taking the magnitude, I found positive 8 m*N. Is this correct?