The torque about the origin O due to a force F acting on an object with position

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The torque about the origin O due to a force F acting on an object with position vector r is the vector quantity τ = r × F. If several forces Fj act at positions rj, then the net torque (units: N-m or lb-ft) is the sum

= r, ,

Calculate the torque τ about O acting at the point P on the mechanical arm in Figure 21(A), assuming that a 25-newton force acts as indicated.

F = 25 newtons 10 m (A) 10 m F = 25 newtons 125 --- (B)  P 125 P F g -X -X

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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