Department of Mechanical Engineering
University of California at Berkeley
ME 104 Engineering Mechanics II
Spring Semester 2010
Instructor: F. Ma
Midterm Examination No. 2
The examination has a duration of 50 minutes.
Answer all questions.
All questions ca
Department of Mechanical Engineering
University of California at Berkeley
ME 104 Engineering Mechanics II
Spring Semester 2010
Instructor: F. Ma
Midterm Examination No. 1
The examination has a duration of 50 minutes.
Answer all questions.
All questions ca
Department of Mechanical Engineering
University of California at Berkeley
ME 104 Engineering Mechanics II
Spring Semester 2010
Instructor: F. Ma
Final Examination
The examination has a duration of 2 hours and 45 minutes.
Answer all questions.
All question
1. Let the angular position of the rod be measured by with respect to the vertical. When the
force F = 12 lb is applied, the two balls move in a circle relative to G. With respect to the mass
center G, the absolute and relative angular momenta are equal.
1. (a) A coordinate system attached to car A is a translating system, in which
aB = a A + aB / A
Observe that
( a B ) t = 3 m/s2
2
v B 144
(a B ) n =
=
= 1.44 m/s2
100
Thus
a B = 3.33 m/s2
64.4
Either from a graphical or analytical solution,
a B / A = 5.
Problem 1.
30
aB = 3.33 m/s2
vA = 18 m/s
vB = 12 m/s
aB/A
vB/A
60
64.4
aA = 2 m/s2
(a) Since the direction of car A is constant, a coordinate system attached to A will only be
translating. In the vector equation
vB = vA + vB/ A
only the vector v A / B is
Department of Mechanical Engineering
University of California at Berkeley
ME 104 Engineering Mechanics II
Spring Semester 2010
Instructor: F. Ma
Midterm Examination No. 2
The examination has a duration of 50 minutes.
Answer all questions.
All questions ca
Department of Mechanical Engineering
University of California at Berkeley
ME 104 Engineering Mechanics II
Spring Semester 2007
Instructor: F. Ma
Midterm Examination No. 2
The examination has a duration of 50 minutes.
Answer ALL questions.
All questions ca