The 25-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 - 0.3. Neglect the mass of paper that is removed. (Elguce 1) • Part A 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 = 3s starting from rest Express your answer to three significant figures and include the appropriate units. Figure 1 of 1 Value Units Submit Previous Answers Resuest Answer 300 X Incorrect; Try Again; 5 attempts remaining 15 Provide Feedback Next >

The 25-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 - 0.3. Neglect the mass of paper that is removed. (Elguce 1) • Part A 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 = 3s starting from rest Express your answer to three significant figures and include the appropriate units. Figure 1 of 1 Value Units Submit Previous Answers Resuest Answer 300 X Incorrect; Try Again; 5 attempts remaining 15 Provide Feedback Next >

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.80P

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Concept explainers

Design of Shafts and Shaft Components

The shaft is basically defined as the machine element that rotates, is in circular cross-section, it is majorly used to transfer the power from one part of the system to another, or from a power generating machine to a power absorbing machine. The shaft is supported on bearings and is rotated with the help of a set of gears or pulleys that are used for the power transmission. Bending moment, torsion, and an axial force act upon the shaft. Designing of shaft primarily involves determining stresses at a critical point in the shaft that is arising due to loading.

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The 25-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 pe = 0.3. Neglect the mass of paper that is
removed. (Eigure 1)
Part A
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.
Figure
< 1 of 1
Value
Units
Submit
Previous Answers Resuest Answer
300
x Incorrect, Try Again; 5 attempts remaining
125
Provide Feedback
Next >

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