A6

ENGR 8
Part I. Drills -- 1 point each
Assignment 6 Chapter 4.7-4.9
Due: next wed
Part II. Assisted Problem Solving -- 2 points each
Plan:
1) Find the resultant Fr of the 3 forces
2) Find the moment of the three forces about
B
3) Position Fr a distance d below B and
calculate the moment of Fr about B
4) Set 3) = 2) and solve for d
PLAN:
1) Find Fr for the 3 forces
2) Find the moment My about y-axis of 3 forces
3) Find the moment Mx about x-axis of 3 forces
4) Apply Fr to location (x,y) where x,y are
unknown variables
5) Calculate the My and Mx of Fr using these
unknown variables.
6) Set 5) = 4) and solve for x and y
Part III. Unassisted Problem Solving -- 3 points each