PH2100
Exam II
FALL 2005
INSTRUCTIONS
1.
Remove the Score Sheet from the exam booklet.
2.
Using a #2 pencil, in the lefthand column entitled Student Enrollment Sheet, fill in your I.D. number and name.
If you are a(n)
your I.D. number is
domestic student
your Social Security number (without the dashes)
international student
your M number; however, replace the leading M with a zero. Example: if your M
number is M12345678, then you would enter 012345678.
3.
With the exception of the first 32 answers on the Score Sheet, all remaining fields should be left blank.
4.
Be sure to fill in the circles completely and avoid stray marks on the form.
5.
This a ninety minute exam.
6.
Please cover your Score Sheet at all times.
7.
This is a closed book exam.
You may use the PH2100 Formula Sheet that is attached to this exam, and you may
find it convenient to rip the formula sheet from the exam booklet.
8.
Graphing calculators are permitted, but equations may not be stored in calculators, nor may calculators be
exchanged.
9.
Cell phones should be turned off and may not be used during the exam period.
10. Assume all numerical data supplied with the problems have three significant figure accuracy, unless explicitly
identified otherwise.
11.
This exam consists of a total of 32 questions.
Each question has a single correct answer and is worth five points.
The total number of points available on the exam is 160.
12.
An announcement will be made when ten minutes remain.
Please remain seated after the announcement is made
until the Score Sheets are collected.
13.
If you have any questions during the exam, please raise your hand and wait for assistance.
14. Please turn in only your Score Sheet.
You may keep the exam booklet and formula sheet.
Please sit in seat number ___________________
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View Full DocumentPH2100
Exam II
FALL 2005
1. A person is standing on a bathroom scale.
Which of the following forces is
not
a
force exerted on the scale?
(A)
a contact force due to the floor
(B)
a contact force due to the person’s feet
(C)
the weight of the person
(D)
the weight of the scale
(E)
all of the above forces act on the scale
2. A person whose true weight is 715 N is standing on a bathroom scale in an elevator.
The scale reads 715 N.
From this we can conclude that
(A)
the elevator must be at rest.
(B)
the elevator must be moving upward with a constant velocity.
(C)
the elevator must be moving downward with a constant velocity.
(D)
the elevator must be moving with a constant, nonzero acceleration.
(E)
none of the above.
3. The net force acting on a moving object suddenly becomes zero.
The object then
(A)
stops abruptly.
(B)
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 Spring '09
 Gibbons
 Electrical Engineering, Force, information applies, E E C B C

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