DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 9, Problem 35RQ
To determine
The reason for having an implicit method of manufacture for an existing geometrical design.
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**Problem 8-45.** The man has a mass of 60 kg and the crate has a mass of 100 kg. If the coefficient of static friction between his shoes and the ground is \( \mu_s = 0.4 \) and between the crate and the ground is \( \mu_c = 0.3 \), determine if the man is able to move the crate using the rope-and-pulley system shown. **Diagram Explanation:** The diagram illustrates a scenario where a man is attempting to pull a crate using a rope-and-pulley system. The setup is as follows: - **Crate (C):** Positioned on the ground with a rope attached. - **Rope:** Connects the crate to a pulley system and extends to the man. - **Pulley on Tree:** The rope runs over a pulley mounted on a tree which redirects the rope. - **Angles:** - The rope between the crate and tree forms a \(30^\circ\) angle with the horizontal. - The rope between the tree and the man makes a \(45^\circ\) angle with the horizontal. - **Man (A):** Pulling on the rope with the intention of moving the crate. This arrangement tests the…
Chapter 9 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 9 - What is the objective of a manufacturing...Ch. 9 - What are some undesirable features of...Ch. 9 - What problems are created by the availability of...Ch. 9 - In a manufacturing environment, why should the...Ch. 9 - How has the material balance shifted in the...Ch. 9 - How have different materials enabled advances and...Ch. 9 - Discuss the interrelation between engineering...Ch. 9 - What is design?Ch. 9 - What are the three primary stages of product...Ch. 9 - What are some of the features to be considered in...
Ch. 9 - What is the benefit of requiring prototype...Ch. 9 - What sequence of activities is common to nearly...Ch. 9 - Prob. 13RQCh. 9 - What is the most frequent pitfall when seeking to...Ch. 9 - What should be the first step in any materials...Ch. 9 - In what ways does the concept of shape or geometry...Ch. 9 - Prob. 17RQCh. 9 - Describe some of the possible mechanical...Ch. 9 - How might temperature enter into the specification...Ch. 9 - What are some physical properties of materials?Ch. 9 - What are some of the important aspects of the...Ch. 9 - What are some of the possible manufacturing...Ch. 9 - Why is it important to resist jumping to the...Ch. 9 - Prob. 24RQCh. 9 - What is the difference between an absolute and...Ch. 9 - Prob. 26RQCh. 9 - Prob. 27RQCh. 9 - Prob. 28RQCh. 9 - Give an example of a product or component where...Ch. 9 - What are some possible considerations relating to...Ch. 9 - Prob. 31RQCh. 9 - Prob. 32RQCh. 9 - Prob. 33RQCh. 9 - Prob. 34RQCh. 9 - Prob. 35RQCh. 9 - Why might material selection and process selection...Ch. 9 - Give an example of where selection of a material...Ch. 9 - Why is it likely that compromise, opinion, and...Ch. 9 - Why is it likely that multiple individuals will be...Ch. 9 - Why should the design and manufacture of a...Ch. 9 - Give an example where an unexpected problem might...Ch. 9 - Prob. 42RQCh. 9 - What are some of the different types of useful...Ch. 9 - How have high�speed, high�capacity computers...Ch. 9 - Prob. 1PCh. 9 - The chalk tray on a classroom chalkboard has very...Ch. 9 - Prob. 3PCh. 9 - Examine the properties of wood, aluminum, and...Ch. 9 - Automobile body panels have been made from carbon...Ch. 9 - Prob. 6PCh. 9 - Go to the local hardware or building supply store...Ch. 9 - Prob. 8PCh. 9 - Decorative fence posts for a residential home have...Ch. 9 - The individual turbine blades used in the exhaust...Ch. 9 - Prob. 11PCh. 9 - Hockey sticks are currently available in wood,...Ch. 9 - What is the normal use or uses of this product or...Ch. 9 - Prob. 2CSCh. 9 - Prob. 3CSCh. 9 - Prob. 4CSCh. 9 - Prob. 5CSCh. 9 - Prob. 6CSCh. 9 - Would there be any concerns relating to...
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