2/8/2017
Statics MAE 241
Spring 2017
Lecture 13: Equilibrium of a Rigid Body, Free-Body Diagram
(5.1-5.3)
Dr. Edward M. Sabolsky
5.1 Conditions for Rigid Body Equilibrium.
Forces on a particle
F=0
Fo
3/30/2017
Statics MAE 241
Spring 2017
Lecture 25: Center of Gravity/Centroid (9.1)
Composite Bodies (9.2)
Dr. Edward M. Sabolsky
Center of Gravity/Centroid (9.1)
1
3/30/2017
APPLICATIONS
To design the
4/15/2017
Statics MAE 241
Spring 2017
Lecture 30:
MoI of Composites (10.2-10.3)
Dr. Edward M. Sabolsky
10.1 Definition of Moments of Inertia for Areas.
Moment of Inertia
For the differential area show
2/20/2017
Statics MAE 241
Spring 2017
Lecture 16: Trusses-Methods of Sections (6.4)
Dr. Edward M. Sabolsky
EXAMPLE
Given:
Loads as shown on the truss
Find:
The forces in each member
of the truss.
Plan
2/24/2017
Statics MAE 241
Spring 2017
Lecture 18: Frames and Machines (6.6)
Dr. Edward M. Sabolsky
EXAMPLE APPLICATION of a FRAME
1
2/24/2017
6.6 Fames and Machines. Applications
Frames are commonly
u
2/19/2017
Statics MAE 241
Spring 2017
Lecture 15: Trusses-Methods of Joints (6.1-6.3)
Dr. Edward M. Sabolsky
5.6 Equations of Equilibrium in 3-D.
As stated earlier, when a body is in
equilibrium, the
3/22/2017
Statics MAE 241
Spring 2017
Lecture 23: Friction and Belt Friction (8.2, 8.5)
Dr. Edward M. Sabolsky
GROUP PROBLEM SOLVING
Given: Dresser weight = 90 lb,
s = 0.25.
Find: The smallest magnitu
3/26/2017
Statics MAE 241
Spring 2017
Lecture 24: Belts (8.3-8.5) and
Center of Gravity/Centroid (9.1)
Dr. Edward M. Sabolsky
8.4 Frictional Forces in Flat Belts. Differential Analysis (cont.)
Integra
2/13/2017
Statics MAE 241
Spring 2017
Lecture 13(cont): Equilibrium in 3D
(5.5-5.7)
Dr. Edward M. Sabolsky
5.2 Free-Body Diagrams. Support reactions
If you remove a support, you must replace it with a
2/23/2017
Statics MAE 241
Spring 2017
Lecture 17: Review Chap. 4-6
Dr. Edward M. Sabolsky
Test Review
1
2/23/2017
Chapt. 4- Moment Couples and Simplifying
of Systems
Chapt. 5- Equations of Equilibrium
3/12/2017
Statics MAE 241
Spring 2017
Lecture 20: Internal Forces (7.1-7.3)
Dr. Edward M. Sabolsky
Retake one problem on March 15th (12 minutes)
Choose either (1 or 2):
1) Any one problem of the 4 giv
4/3/2017
Statics MAE 241
Spring 2017
Lecture 27: Centroid of an Area for Composite Bodies (9.2),
And Moment of Inertia (10.1)
Dr. Edward M. Sabolsky
CENTROID of an AREA
for COMPOSITE
BODIES
1
4/3/2017
2/5/2017
Statics MAE 241
Spring 2017
Lecture 11: Moment Couples and
Reduction of a Simplified Distributed System
(4.6-4.9)
Dr. Edward M. Sabolsky
4.6 Moment of a Couple. Applications
1
2/5/2017
4.6 Mo
2/16/2017
Statics MAE 241
Spring 2017
Lecture 14: Equilibrium in 3D
(5.5-5.7)
Dr. Edward M. Sabolsky
Announced Quizzes
(Monday 20th and Wednesday 22nd)
Monday- <5 minutes to draw FBD for 1 to 2 of the
MAE 241- Statics- Quiz 5
Name: jolteibm
Date:
Determine the horizontal and vertical components for the reactions at the supports. Neglect the
thickness of the beam.
MAE 241- Statics- Quiz 6
Name:
Date:
Determine the internal shear force and moment couple at point C using the cut- method. The
reaction at B (force By) IS equal to 23 25kN.
12 kN
.51 B
m e . C
l
les
3/21/2017
Statics MAE 241
Spring 2017
Lecture 22: Friction (8.1-8.2)
Dr. Edward M. Sabolsky
8.1 Friction. Applications
In designing a brake system for
a bicycle, car, or any other
vehicle, it is impor
4/6/2017
Statics MAE 241
Spring 2017
Lecture 28: Review Chap. 6.6, 7, 8, and 9
Dr. Edward M. Sabolsky
Chapter 6:
6.6: Frames and Machines
1) Macroscopic FBD (of the whole system).
2) Pull pins and con
4/9/2017
Statics MAE 241
Spring 2017
Lecture 29: Moment of Inertia (10.1)
Dr. Edward M. Sabolsky
Moment of Inertia
1
4/9/2017
APPLICATIONS
Many structural members like beams and columns have cross sec
Name: _
A
MAE 241-5 Statics
Fall 2009
_ / 100 pts.
Exam 3 - A
Wednesday, November 04, 2009
Problem No. 1
Determine the force in each member of the
truss and state if the members are in tension or
comp
Name: _
MAE 241-5 Statics
Fall 2009
_ / 10.0 pts.
Make-Up Exam 1
Friday, September 25, 2009
Problem No. 1
If the magnitude of the resultant force is to be 9 kN
directed along the positive x axis, dete
4/2/2017
Statics MAE 241
Spring 2017
Lecture 26: Composite Bodies (9.2)
Dr. Edward M. Sabolsky
COMPOSITE BODIES
Objective:
Students will be able to determine:
a) The location of the center of gravity
3/13/2017
Statics MAE 241
Spring 2017
Lecture 21: Internal Forces (7.1-7.3)
Dr. Edward M. Sabolsky
7.1 Internal Forces.
The design of any structural member
requires finding the forces acting
within th
2/24/2017
Statics MAE 241
Spring 2017
Lecture 19: Frames and Machines
Dr. Edward M. Sabolsky
6.6 Fames and Machines. Application Problem
Given: A frame and loads as shown.
Find: The reactions that the
Statics MAE 241
Spring 2017
Review
Dr. Edward M. Sabolsky
I enjoyed having all of you in class,
and I wish all the best for you future.
Please visit anytime if you want to
talk about anything.
1
COMMO
MAE 241 Statics
Review Problems
January 8, 2018
The following problems are for you to practice basic skills required in statics for geometric and
trigonometric properties. Additional problems are prov
Statics MAE 241
Spring 2018
Lecture 1
Dr. Edward M. Sabolsky
My Background
Degrees from the Big Ten
B.S.- Ohio State
Ph.D.- Penn State
Materials Science and Engineering background
Leader of Fuel