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15-103. A 4-lb ball B is traveling around in a circle of radius r, = 3 ft with a speed (v3), = 6 ft/s. If the attached cord is pulled down through the hole with a constant speed v, = 2 ft/s, determine the ball's speed at the instant n = 2 ft. How much work has to be done to pull down the cord? Neglect friction and the size of the ball. Bn = 3 ft (UB)1 = 6 ft/s v, = 2 ft/s

15-103. A 4-lb ball B is traveling around in a circle of radius r, = 3 ft with a speed (v3), = 6 ft/s. If the attached cord is pulled down through the hole with a constant speed v, = 2 ft/s, determine the ball's speed at the instant n = 2 ft. How much work has to be done to pull down the cord? Neglect friction and the size of the ball. Bn = 3 ft (UB)1 = 6 ft/s v, = 2 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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15-103. A 4-lb ball B is traveling around in a circle of radius r, = 3 ft with a speed (v3), = 6 ft/s. If the attached cord is pulled down through the hole with a constant speed v, = 2 ft/s, determine the ball's speed at the instant n = 2 ft. How much work has to be done to pull down the cord? Neglect friction and the size of the ball. Bn = 3 ft (UB)1 = 6 ft/s v, = 2 ft/s
Transcribed Image Text:15-103. A 4-lb ball B is traveling around in a circle of radius r, = 3 ft with a speed (v3), = 6 ft/s. If the attached cord is pulled down through the hole with a constant speed v, = 2 ft/s, determine the ball's speed at the instant n = 2 ft. How much work has to be done to pull down the cord? Neglect friction and the size of the ball. Bn = 3 ft (UB)1 = 6 ft/s v, = 2 ft/s
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