The disk D, which has weight W = 15 lb, starts from rest on an incline when the constant moment M is applied to it. The disk is attached at its center to a wall by a spring of constant k = 7 ft/lb. The spring is unstretched when the disk is at its starting position. The disk rolls down the incline without slipping. Take R = 5 ft, 0 = 25° and g = 32.2 ft/s². Use for the moment of inertia of the disk about G, Ic= /mR²

Elements Of Electromagnetics
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The disk D, which has weight W = 15 lb, starts from rest on an incline when the constant moment M is applied
to it. The disk is attached at its center to a wall by a spring of constant k = 7 ft/lb. The spring is unstretched
when the disk is at its starting position. The disk rolls down the incline without slipping.
Take R = 5 ft, 0 = 25° and g = 32.2 ft/s².
Use for the moment of inertia of the disk about G, IG:
Figure
D
Part B
R
M
mR²
wwww
1 of 1
Part A -
Draw a free body diagram of the disk. Indicate which forces and/or couples do work on the disk.
Determine the value of the moment M for the disk to stop after rolling down a distance d = 5 ft down the
incline. You must use the work-energy theorem to solve this question.
Transcribed Image Text:The disk D, which has weight W = 15 lb, starts from rest on an incline when the constant moment M is applied to it. The disk is attached at its center to a wall by a spring of constant k = 7 ft/lb. The spring is unstretched when the disk is at its starting position. The disk rolls down the incline without slipping. Take R = 5 ft, 0 = 25° and g = 32.2 ft/s². Use for the moment of inertia of the disk about G, IG: Figure D Part B R M mR² wwww 1 of 1 Part A - Draw a free body diagram of the disk. Indicate which forces and/or couples do work on the disk. Determine the value of the moment M for the disk to stop after rolling down a distance d = 5 ft down the incline. You must use the work-energy theorem to solve this question.
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