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15-111. A box having a weight of 8 lb is moving around in a circle of radius rA=2 ft with a speed of (vA)1=5 ft/s while connected to the end of a rope. If the rope is pulled inward with a constant speed of v, =4 ft/s, determine the speed of the box at the instant rg = 1 ft. How much work is done after pulling in the rope from A to B? Neglect friction and the size of the box. Tg = 1 ft A = 2 ff v, = 4 ft/s (vA)1 = 5 ft/s

15-111. A box having a weight of 8 lb is moving around in a circle of radius rA=2 ft with a speed of (vA)1=5 ft/s while connected to the end of a rope. If the rope is pulled inward with a constant speed of v, =4 ft/s, determine the speed of the box at the instant rg = 1 ft. How much work is done after pulling in the rope from A to B? Neglect friction and the size of the box. Tg = 1 ft A = 2 ff v, = 4 ft/s (vA)1 = 5 ft/s

Elements Of Electromagnetics
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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15-111. A box having a weight of 8 lb is moving around in a circle of radius rA=2 ft with a speed of (vA)1=5 ft/s while connected to the end of a rope. If the rope is pulled inward with a constant speed of v, =4 ft/s, determine the speed of the box at the instant rg = 1 ft. How much work is done after pulling in the rope from A to B? Neglect friction and the size of the box. Tg = 1 ft A = 2 ff v, = 4 ft/s (vA)1 = 5 ft/s
Transcribed Image Text:15-111. A box having a weight of 8 lb is moving around in a circle of radius rA=2 ft with a speed of (vA)1=5 ft/s while connected to the end of a rope. If the rope is pulled inward with a constant speed of v, =4 ft/s, determine the speed of the box at the instant rg = 1 ft. How much work is done after pulling in the rope from A to B? Neglect friction and the size of the box. Tg = 1 ft A = 2 ff v, = 4 ft/s (vA)1 = 5 ft/s
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