A 30-kg disk A is attached to one end of a spring with stiffness k = 200 N/m at its center G. The other end of the spring is fixed at A. The disk is initially at rest with the spring unstretched. A couple moment of M = 80 Nm is then applied to the disk causing the disk to roll to the left without sliding. Consider the duration of motion when the disk rolls from the position shown (Position 1) to a position (Position 2) when its mass center G has moved 0.5 m to the left. M = 80 Nm 0.5 m k = 200 N/m 3. Which of the following gives the closest value of the work done by the spring from position 1 to position 2? 4. Which of the following gives the closest value of the work done by the applied couple from position 1 to position 2? -80 Nm -40 Nm 40 Nm 80 Nm ◆ A O 25 Nm -25 Nm 50 Nm -50 Nm ◆

A 30-kg disk A is attached to one end of a spring with stiffness k = 200 N/m at its center G. The other end of the spring is fixed at A. The disk is initially at rest with the spring unstretched. A couple moment of M = 80 Nm is then applied to the disk causing the disk to roll to the left without sliding. Consider the duration of motion when the disk rolls from the position shown (Position 1) to a position (Position 2) when its mass center G has moved 0.5 m to the left. M = 80 Nm 0.5 m k = 200 N/m 3. Which of the following gives the closest value of the work done by the spring from position 1 to position 2? 4. Which of the following gives the closest value of the work done by the applied couple from position 1 to position 2? -80 Nm -40 Nm 40 Nm 80 Nm ◆ A O 25 Nm -25 Nm 50 Nm -50 Nm ◆

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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A 30-kg disk A is attached to one end of a spring with stiffness k = 200 N/m at its center G. The other end of the spring is fixed at A. The disk is initially at rest
with the spring unstretched. A couple moment of M = 80 Nm is then applied to the disk causing the disk to roll to the left without sliding.
Consider the duration of motion when the disk rolls from the position shown (Position 1) to a position (Position 2) when its mass center G has moved 0.5 m to the
left.
M = 80 N·m
0.5 m
G
k = 200 N/m
3. Which of the following gives the closest value of the work done by the spring from position 1 to position 2?
4. Which of the following gives the closest value of the work done by the applied couple from position 1 to position 2?
-80 Nm
-40 Nm
40 Nm
80 Nm
♦
A
O
25 Nm
-25 Nm
50 Nm
-50 Nm

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