A 75-kg block is attached to a cable. The cable is then attached to a rotating assembly with a mass moment of inertia rotating assembly equivalent to a couple of 45 N-m CCW. The block's downward speed is initially at 2 m/s. 0.3 m 75 kg 1. Which of the following does positive work on the system? 2. Which of the following is closest to the work done by the bearing friction after the rotating assembly has rotated 1.5 radians CW?

A 75-kg block is attached to a cable. The cable is then attached to a rotating assembly with a mass moment of inertia rotating assembly equivalent to a couple of 45 N-m CCW. The block's downward speed is initially at 2 m/s. 0.3 m 75 kg 1. Which of the following does positive work on the system? 2. Which of the following is closest to the work done by the bearing friction after the rotating assembly has rotated 1.5 radians CW?

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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Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

A 75-kg block is attached to a cable. The cable is then attached to a rotating assembly with a mass moment of inertia of 18 kg-m^2. The bearing friction applied at the
rotating assembly equivalent to a couple of 45 N-m CCW. The block's downward speed is initially at 2 m/s.
0.3 m
75 kg
m
1. Which of the following does positive work on the system?
2. Which of the following is closest to the work done by the bearing friction after the rotating assembly has rotated 1.5 radians CW?
3. Which of the following is closest to the work done by the weight of the 75-kg block after the rotating assembly has rotated 1.5 radians CW?
4. Which of the following is closest to the total work done by the system after the rotating assembly has rotated 1.5 radians CW?
5. Which is following is closest to the speed of the 75-kg block after the rotating assembly rotated 1.5 rad CW?

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