The spool has a weight of 75 lb and a radius of gyration ko = 1.20 ft. If the block B weighs 60 lb, and a force P = 25 lb is applied to the cord; determine the speed of the block after 5 s starting from rest. Neglect the mass of the cord.
The spool has a weight of 75 lb and a radius of gyration ko = 1.20 ft. If the block B weighs 60 lb, and a force P = 25 lb is applied to the cord; determine the speed of the block after 5 s starting from rest. Neglect the mass of the cord.
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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Transcribed Image Text:The problem involves calculating the speed of a block after a force is applied to a spool system. Here is the transcription and explanation:
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The spool has a weight of 75 lb and a radius of gyration \( k_O = 1.20 \, \text{ft} \). If the block \( B \) weighs 60 lb, and a force of \( P = 25 \, \text{lb} \) is applied to the cord, determine the speed of the block after 5 seconds starting from rest. Neglect the mass of the cord.
**Diagram Explanation:**
The diagram depicts a spool with a horizontal cord wrapped around it. The force \( P \) is applied tangentially to the spool at the end of the cord, exerting a pull to the right. The spool has two radii indicated:
- The inner radius, \( 0.75 \, \text{ft} \), where the cord is attached near the axis.
- The outer radius, \( 2 \, \text{ft} \).
Below the spool, a block \( B \) is suspended, illustrating the vertical connection via the cord. The problem requires calculating how fast this block moves after 5 seconds, ignoring the cord's mass.
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This setup involves principles of rotational dynamics and translational motion to find the block's final speed, taking into account the forces and geometry provided.
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