Chapter 12.8, Problem 113P

0.28. The tire wrench shown in the accompanying figure is used to tighten the bolt on a wheel. Given the infor- mation on the diagram, determine the moment about point O for the two loading situations shown: a. pushing perpendicular to the wrench arm b. pushing at a 75° angle, as shown F =250 N 75 -L=1m- Problem 10.28

1. Find the moment of the 500 N force shown about Point A. Write your answer using 2 significant digits. A 200 mm F = 500 N 30° В 250 mm

SOLVE FOR THE SUM OF MOMENT OF ALL FORCES CLOCKWISE DIRECTION IS POSITIVE AT POINT A, B, C AND D. Nool =4 G= 80N 2m 2m R= 90N 2m P= 120N 2m 2m 2m

Determine the moment that is generated at point O by each force that appears in the bar of the following figure. O= N.m

F M F= {30 i+ 40j + 50 k} N applied to point M| strength; 3 N (a) The moment it develops around O (b) Find the moment it develops around N y 2.

The pictured member has lengths L₁ = 6 m and L₂ = 1 m, with the applied force F = 180 N. Calculate the moment around point O. Follow the sign convention that positive moments are counterclockwise, and negative moments are clockwise. F O The moment around O= 3 LO N.m. 5 4 k L₂ 080 BY NO SA 2021 Cathy Zupke

F = 375 Ib F = 500 Ib B. 8 ft + 6ft 5 t- 30 F, = 160 Ib

3 Positive sign is assigned for the moment if the force direction is counterclockwise.  Select one: True False

Find the moment about point A. Write the moment in a Cartesian form to get full points. Note that the positive axis z points upward and is perpendicular to the x-y plane. 300 N 300 mm 100 N 300 mm 100 N 300 N 200 mm