Engineering Statics

B-11


For the shift lever shown, determine the magnitude and direction of the smallest force P which has a 220 lb-in clockwise moment about point B.

The smallest force is the force perpendicular to the distance.
The distance is found from the square root of the sum of the squares 
of the two sides.
Using arithmetic the value is found.
The moment is r(P) and given as 220 lb-in.
The terms are rearranged to find P.
Arithmetic yields the value for P.

The angle is the arctangent of the two sides of the right triangle." >
The calculator yields the value of the angle.