MECH.3210
Name: ____________________________
Homework #1
The Design Process and Kinematics Fundamentals
1. The design process from the textbook consists of 10 steps. List them here in the correct
order:
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
2. (2-4a) How many degrees of freedom (DOF) does a submerged submarine have in its
normal environment?
__________
3. (2-5) Which of the following is an example of a form-closed joint?
a. Shoulder joint
b. Knuckle joint
c. A pin in a hole
d. A slider on a surface
4. (2-6f) Which of the following best describes the motion of a hockey puck on ice?
a. Pure rotation
b. Pure translation
c. Complex motion
d. Oscillatory motion
MECH.3210
Initials:__________
Homework #1
5. (2-8) Identify the following items as either mechanisms, structures or preloaded
structures, based on their DOF:
___________________________
____________________________
___________________________
_____________________________
6. (2-15) The link lengths for several fourbar mechanisms are given below. Which one is
non-Grashof? (It doesn’t matter, but assume the given link lengths are in inches…)
a.
b.
c.
d.
2
2
2
2
3.5
4.5
4.0
4.0
7
7
6
7
9
9
8
9
2
MECH.3210
Initials:__________
Homework #1
7. (2-38) The links have been assigned numbers and the joints have been assigned letters in
the linkage shown in the figure below.
Which of the following links is binary?
a. Link 1
b. Link 2
c. Link 3
d. Link 4
8. (2-38) The links have been assigned numbers and the joints have been assigned letters in
the linkage shown in the figure below.
Which of the following joints is a half joint?
a. Joint B
b. Joint C
c. Joint D
d. Joint F
3
MECH.3210
Initials:__________
Homework #1
9. (2-24) What is the mobility of the mechanism shown in the figure below?
______________
10. (2-22) Which of the following is true of the mechanism shown in the figure?
a.
b.
c.
d.
Both the loops in this mechanism are Class II linkages.
Both the loops in this mechanism are Class III linkages.
One loop in this mechanism is a Class II linkage, while the other one is Class III.
One loop in this mechanism is a Class I linkage, while the other one is Class II.
4