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Midterm Exam Solutions - Engineering Mechanism | 440 221, Exams of Engineering

Material Type: Exam; Class: 440 - ENGINEERING MECH; Subject: GENERAL ENGINEERING; University: Rutgers University; Term: Fall 2010;

Typology: Exams

2009/2010

Uploaded on 12/11/2010

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Engineering Mechanics 440:221
Department of Mechanical and Aerospace Engineering
Rutgers – The State University of New Jersey
Instructor: Alberto Cuitino, TA: Gulsad Kucuk, Jingru Zhang
Midterm Exam
Wednesday, October 13, 2010
PLEASE NOTE:
Time allowed 60 minutes.
The exam is CLOSED TEXTBOOK and CLOSED NOTES.
You are allowed to use a scientific calculator; you cannot share your
calculator.
You need to show your work.
Numerical answers without the supporting work will not be considered, so
SHOW ALL WORK!
You must draw ALL relevant free body diagrams, SEPARATELY from the
given figures (i.e. Do NOT draw your FBDs on top of the figures)
Please write:
Name:___________________________________ Section:____
Please do not write anything below this line
SCORES:
1. (30 points)
2. (40 points)
3. (30 points)
Total (100 points)
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Engineering Mechanics 440: Department of Mechanical and Aerospace Engineering Rutgers – The State University of New Jersey Instructor: Alberto Cuitino, TA: Gulsad Kucuk, Jingru Zhang Midterm Exam Wednesday, October 13, 2010 PLEASE NOTE:Time allowed 60 minutes.The exam is CLOSED TEXTBOOK and CLOSED NOTES.You are allowed to use a scientific calculator; you cannot share your calculator.You need to show your work.Numerical answers without the supporting work will not be considered, so SHOW ALL WORK!You must draw ALL relevant free body diagrams, SEPARATELY from the given figures (i.e. Do NOT draw your FBDs on top of the figures) Please write:

Name:___________________________________ Section:____

Please do not write anything below this line SCORES:

1. (30 points)

2. (40 points)

3. (30 points)

Total (100 points)

  1. (a) Express the forces on AB and AC, FAB and FAC in vector form. (b) Determine the magnitude of the resultant force. (c) Determine the coordinate direction angles of the resultant force.
  1. Two man exert forces of F=80lb and P=50lb on the ropes. (a) Determine the moment of F about point A. (b) Determine the moment of P about point A. (c) Which way will the pole rotate, clockwise or counterclockwise? ∑ M^ A =−^80 (

5 )

∑ M^ A =−^768 lb.^ ft ∑ M^ A =^50 (

√^2 )

∑ M^ A =636.3^ lb.^ ft ∑ M^ R=636.3−^768 =−131.4^ lb.^ ft Clockwise