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Test #3, PHYS 1111, Section
Oct. 30, 2002, Stancil 5, (12:201:10pm) This is a multiple choice test of 13 questions. Give only one answer for
each question. Besure to enter your name and SSN on the scantron form. You
may keep the question sheet.
The moment of inertia about the the center of mass for the solid cylinder
1/2*MRA2, for the hoop MRA2, and for the rod 1/12*MLA2.
1. a The earth's radius is 6.38x106 m, and it completes one revolution every
24 hours. What is the tangential speed of a person standing on the
equator?
/ == 2 4hvs
8 b(L/Go j
a. 232 m/s
I~~
IM/"1
{;
(\
b. 148 m/ s
.
==
1<
= 0 I J ~ X (0 /Y1 2 Tl I _ L.j 6 L! 111/1 j
(c) 464 m/ s
T)
_
d. 73.8 m/s
rTf
~
26,4(j(J 'S.
iN :.. 2 1/, T (~)(jOS Vt 2. is ) = {Yl \ rZ w _
J An 82.0 kgdiver stands at the edge of a 5.00m diving board, which is
supported by two pillars 1.60 m apart, as shown in the figure. Find the
force exerted by pillar A.
(c0 1.71 kN downwards
~. 1.71 kN upwards
c. 2.51 kN downwards
tv!
d. 2.51 kN upwards ;:~~a d FA (!,60~)  0+ == Figure 1 (3jIH) tJ2. o)(7r J/J3Jlq ~~.:: /160 /, 6 (j f1 5.00 m .::f: ;=[7 kif .11 .:: 0 ,[ /
. _. ' 1.60 m
B A
3. A torque of 0.97 Nm is applied
mass 0.75 kg. Treating
acceleration.
a. 0.127 rad/s2
11 rad/s2
I
c. 21 rad/s2 dO d. 35 m/s2 Qrr r to a bicycle wheel of radius 35 cm and
the wheel as a hoop, find its angular Ihoor = M rc L
.£f;':::: 1
c{
t(~rvZ..
eX.:::: t('
1:
~..r   Jv1Qt. =(11 1'&.//52/
J O(17)./}+1 (0,7) A))C (), ~ )~z. ...
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