Answered: The 13.5-lblb disk rests on the 5-lblb…

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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The 13.5-lblb disk rests on the 5-lblb plate. A cord is wrapped around the periphery of the disk and attached to the wall at BB. A torque MM = 40 lb⋅ftlb⋅ft is applied to the disk. Assume the disk does not slip on the plate and the plate rests on the surface at DD having a coefficient of kinetic friction of μkμk = 0.2. Neglect the mass of the

Determine the angular acceleration of the disk measured counterclockwise .

Determine the time needed for the end CC of the plate to travel 3 ftft and strike the wall.

The 13.5-lb disk rests on the 5-1b plate. A cord is wrapped around
the periphery of the disk and attached to the wall at B. A torque
M = 40 lb-ft is applied to the disk. Assume the disk does not slip
on the plate and the plate rests on the surface at D having a
coefficient of kinetic friction of μ = 0.2. Neglect the mass of the
cord. (Figure 1)
Figure
M = 40 lb ft
A
1.25 ft
D
C
<
B
-3 ft-
1 of 1
Part A
Determine the angular acceleration of the disk measured counterclockwise.
Express your answer using three significant figures. Enter positive value if the angular acceleration is counterclockwise and negative value if the angular
acceleration is clockwise.
απ
Submit
Part B
t =
V—| ΑΣΦ | 11
Request Answer
Submit
Value
Determine the time needed for the end of the plate to travel 3 ft and strike the wall.
Express your answer to three significant figures and include the appropriate units.
µÅ
vec
Request Answer
Units
?
?
rad/s²

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