MECHANICAL & AEROSPACE ENGINEERING DEPARTMENT UNIVERSITY OF CALIFORNIA, LOS ANGELES MAE 101 STATICS AND STRENGTH OF MATERIALS Fall, 2008 INSTRUCTOR CHATTERJEE, A. K. MIDTERM EXAMINATION November 7, 20
MECHANICAL & AEROSPACE ENGINEERING DEPARTMENT UNIVERSITY OF CALIFORNIA, LOS ANGELES MAE 101 STATICS AND STRENGTH OF MATERIALS Fall, 2008 INSTRUCTOR CHATTERJEE, A. K. Quiz October 17, 2008
INSTRUCTIONS
Problem 7.29 Determine the coordinates of the cen-
troicts.
Solution: Divide the shape up into a rectangle, a semicircle, and
a circular cutout as shown. Note that the y coordinates of the centroids
The force at D is the force that goes into the thread moment equation. Therefore, it should read M = (0.01)(13)tan(8.53 + 4.55) = 30.2 N-m
9.04 N-m
13 kN
1
l
l
l
lloblem 6.5 (a) Let the dimension is z 0.1 m. Deter-
mine the axial forces in the members, and show that in
this case this truss is equivalent to the one in Problem 6.4.
(b) Let the