1. Chp4, Lab-03 Example Problems 4.5.[60,54]
Engineering 36
Chp4, Lab-03 Example Problems 4.5.[60,54]
From S & T
Bruce Mayer, PE
Licensed Electrical & Mechanical Engineer

2. Problem
200 N
Find W||
Find W
Find θ Such That

7. Problem 4.5.60 Write an Expression for F1 Write an Expression for F2
Show That: F1 = – F2

9. → 𝜃 𝑥 =68.6° • 𝜃 𝑦 =79.5° • 𝜃 𝑧 =155.9°

11. MATLAB solution % Bruce Mayer, PE % ENGR36 * 24Aug10
% ENGR36_Lab03_P4_5_60_1008.m %
AB = [2 1 -5]; % i j k in meters
LAB = sqrt(sum(AB.*AB));
uAB = AB/LAB;
F1 = uAB*3 % 3 is in kN
BA = [ ]; % i j k in meters
LBA = sqrt(sum(BA.*BA)); % should be SAME as LAB
uBA = BA/LBA;
F2 = uBA*3 % 3 is in kN
MinusF2 = -F2 % has SAME components as F1, QED