The pulleys-block system consists of a 3-kg pulley A and 10-kg pulley B. Neglect the mass of the cord and treat the pulleys as thin disks. If a 2-kg block C is suspended from the cord, and starting to descend from rest, until pulley B reaches the angular velocity of 6 rad/s. 1) Apply the Principle of Work and Energy to the pulleys-block system from position 1 (it is at rest) to position 2 (when pulley B reaches the angular velocity of 6 rad/s). 2) Find out the linear speed Vc of block C, at position 2 (when pulley B reaches the angular velocity of 6 rad/s). 3) Draw fee body diagram of block C, then apply the Principle of Work and Energy to determine the tensile force F in the cord while block C is in motion. 4) Find out the linear acceleration ac of block C while it is in motion.
The pulleys-block system consists of a 3-kg pulley A and 10-kg pulley B. Neglect the mass of the cord and treat the pulleys as thin disks. If a 2-kg block C is suspended from the cord, and starting to descend from rest, until pulley B reaches the angular velocity of 6 rad/s. 1) Apply the Principle of Work and Energy to the pulleys-block system from position 1 (it is at rest) to position 2 (when pulley B reaches the angular velocity of 6 rad/s). 2) Find out the linear speed Vc of block C, at position 2 (when pulley B reaches the angular velocity of 6 rad/s). 3) Draw fee body diagram of block C, then apply the Principle of Work and Energy to determine the tensile force F in the cord while block C is in motion. 4) Find out the linear acceleration ac of block C while it is in motion.
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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Hi, I'm confused as to how to approach this problem. I have attached the question and my work so far.
To solve the problem using the Principle of Work and Energy, I would need to know the work done in moving the mass downwards and increasing the angular velocity of disk B to 6 radians/second.
Since I could not figure out how to do this, I attempted the question using the Conservation of Energy principle. But due to not knowing the distance moved by mass C, I could not get any further than shown in my work so far.
Thank you!
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