Part A The 21-kg roll of paper has a radius of gyration k, = 90 mm about an axis passing through point A. It is pin supported at both ends by two brackets AB. The roll rests against a wall for which the coefficient of kinetic friction is Hk = 0.2. Neglect the mass of paper that is removed. (Figure 1) Determine the magnitude of the constant vertical force F that must be applied to the roll to pull off 1 m of paper in t = 3 s starting from rest Express your answer to three significant figures and include the appropriate units. HẢ ? Value Units F = Submit Request Answer Provide Feedback

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Part A
The 21-kg roll of paper has a radius of gyration kA = 90 mm about an
axis passing through point A. It is pin supported at both ends by two
brackets AB. The roll rests against a wall for which the coefficient of
kinetic friction is u = 0.2. Neglect the mass of paper that is removed.
(Figure 1)
Determine the magnitude of the constant vertical force F that must be applied to the roll to pull off 1 m of paper in t = 3 s starting from rest.
Express your answer to three significant figures and include the appropriate units.
TH HẢ
?
F =
Value
Units
Submit
Request Answer
Provide Feedback
Figure
< 1 of 1
300 mm
125 mm
Transcribed Image Text:Part A The 21-kg roll of paper has a radius of gyration kA = 90 mm about an axis passing through point A. It is pin supported at both ends by two brackets AB. The roll rests against a wall for which the coefficient of kinetic friction is u = 0.2. Neglect the mass of paper that is removed. (Figure 1) Determine the magnitude of the constant vertical force F that must be applied to the roll to pull off 1 m of paper in t = 3 s starting from rest. Express your answer to three significant figures and include the appropriate units. TH HẢ ? F = Value Units Submit Request Answer Provide Feedback Figure < 1 of 1 300 mm 125 mm
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