Same situation as the previous problem. Which expression is a correct application of summing the moment about the instantaneous center of zero velocity (IC) with CCW positive? a. Ffr=-¹/2 mr²a b. Ffr-mgr cos 0 = -³/2 mr²a C. -mgr sin 0= -³/2 mr² a d. -mgr cos = -¹/2 mr²a e. none of the above (Note: I assume a is CW, so the negative signs in the RHS are intentional and are not a reason to choose e.) y x G 0 8/ Hk
Same situation as the previous problem. Which expression is a correct application of summing the moment about the instantaneous center of zero velocity (IC) with CCW positive? a. Ffr=-¹/2 mr²a b. Ffr-mgr cos 0 = -³/2 mr²a C. -mgr sin 0= -³/2 mr² a d. -mgr cos = -¹/2 mr²a e. none of the above (Note: I assume a is CW, so the negative signs in the RHS are intentional and are not a reason to choose e.) y x G 0 8/ Hk
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Same situation as the previous problem. Which expression is
a correct application of summing the moment about the
instantaneous center of zero velocity (IC) with CCW
positive?
a. Ffr= -¹/2 mr²a
b.
c.
d.
e.
Ffr-mgr cos 0 = -³/2 mr²a
-mgr sin = -³/2 mr²a
-mgr cos 0= -¹/2 mr² a
none of the above (Note: I assume a is CW, so the
negative signs in the RHS are intentional and are not
a reason to choose e.)
5. Four slender rods of 5 kg each are pinned at O as shown. The
system is at rest in the horizontal plane when a 90 N force is
applied as shown. How fast is the assembly spinning after 3
seconds?
c.
d.
e.
a. 86.9 rad/s
b. 21.7 rad/s
22.5 rad/s
27.2 rad/s
none of the above
G
15°-
0
0.8 m
90 N
8↓
Hs
Hk
0.4 m
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