2) If F 1 = {78 i - 120 j + 75 k }lb and F 2 = {- 200 i + 250 j + 78 k }lb, dete

Question

2)If F1= {78i - 120j + 75k}lb and F2= {-200i + 250j + 78k}lb, determine the magnitude of resultant moment (lb.ft) produced by the forces about point O.  Do not include units as part of your answer!

3)Determine the magnitude of the moment "lb?ft" about the x axis due to force F.  It is given that F = { 11i - 16j + 58k } lb. Do not include units as part of your answer!

big question alot of point

The snorkel lift is extended into the position shown. If the worker weighs 209 lb, determine the moment (lb.ft) of this force about the connection at A. Sign convention is counter-clockwise positive and clockwise negative. Do not include units as part of your If F1= {78i - 120j + 75k}lb and F2= {-200i + 250j + 78k}lb, determine the magnitude of resultant moment (lb.ft) produced by the forces about point O. Do not include units as part of your answer!

Explanation / Answer

1. -209 x (2+25cos50) = -2776.6

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