dIàB8radkŤYou were able to obtain a roll of toilet paper during quarantine and put it to good use. If the roll restsagainst a wall where its coefficient of friction is -0.22 and you apply a force of 0.7 N at an angle of40* from the vertical. Force F is also tangent to the roll. Determine the angular acceleration of theprecious toilet paper. Mark a counterclockwise acceleration as positive and a clockwise acceleration asnegative.Hint: Watch your vector direction for a aboveFAssume the roll can be treated as a cylinder with a mass of 0.21 kg, a width of 11.5 cm, and a radius of7.5 cm. Point B is a vertical distance d=13 cm from point A.UBC Engineering

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Engineering

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TO || rad k

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 7.24P: A uniform plank is supported by a fixed support at A and a drum at B that rotates clockwise. The...

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Question

d
I
à
B
8
rad
k
Ť
You were able to obtain a roll of toilet paper during quarantine and put it to good use. If the roll rests
against a wall where its coefficient of friction is -0.22 and you apply a force of 0.7 N at an angle of
40* from the vertical. Force F is also tangent to the roll. Determine the angular acceleration of the
precious toilet paper. Mark a counterclockwise acceleration as positive and a clockwise acceleration as
negative.
Hint: Watch your vector direction for a above
F
Assume the roll can be treated as a cylinder with a mass of 0.21 kg, a width of 11.5 cm, and a radius of
7.5 cm. Point B is a vertical distance d=13 cm from point A.
UBC Engineering

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