PRECISION MACHINING TECHNOLOGY PACKAGE
3rd Edition
ISBN: 9780357262788
Author: Hoffman
Publisher: CENGAGE L
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Chapter 4.2, Problem 6RQ
What is the major difference between counterboring and spotfacing?
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The two disks A and B have a mass of 4 kg and 5 kg,
respectively. They collide with the initial velocities shown.
The coefficient of restitution is e = 0.65. Suppose that
(VA)1 = 6 m/s, (VB)1 = 8 m/s. (Figure 1)
Part A
Determine the magnitude of the velocity of A just after impact.
Express your answer to three significant figures and include the appropriate units.
Figure
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μÅ
(VA)2 =
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Determine the angle between the x axis and the velocity of A just after impact, measured clockwise from the negative x axis.
Express your answer in degrees to three significant figures.
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Express your answer to three significant…
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The spring has a stiffness k = 200 N/m and an
unstretched length of 0.5 m. It is attached to the 4.6-kg
smooth collar and the collar is released from rest at A.
Neglect the size of the collar. (Figure 1)
Part A
Determine the speed of the collar when it reaches B.
Express your answer to three significant figures and include the appropriate units.
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Problem 15.96
Part A
In (Figure 1), take m₁ = 3.4 kg and m =
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Determine the component of the angular momentum Ho of particle A about point O.
Express your answer in kilogram-meters squared per second to three significant figures.
(Ho) z
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vec
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kg m2/s
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Express your answer in kilogram-meters squared per second to three significant figures.
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Chapter 4 Solutions
PRECISION MACHINING TECHNOLOGY PACKAGE
Ch. 4.1 - Upright drill presses are available in _______ and...Ch. 4.1 - List two general types of upright drill press...Ch. 4.1 - Explain how the size of an upright drill press is...Ch. 4.1 - Briefly describe the term sensitive drill press.Ch. 4.1 - Briefly describe a gang drill press and its...Ch. 4.1 - When would a radial-arm drill press most likely be...Ch. 4.1 - Briefly describe a micro drill press and its...Ch. 4.2 - What are the two main materials used to make...Ch. 4.2 - What two types of shanks are commonly found on...Ch. 4.2 - Name three functions of the flutes on a twist...
Ch. 4.2 - Name two types of flute styles for machine...Ch. 4.2 - Prob. 5RQCh. 4.2 - What is the major difference between counterboring...Ch. 4.2 - What must be used to secure a workpiece to an...Ch. 4.2 - What devices are used to elevate a workpiece to...Ch. 4.2 - If 50 parts measuring 1" I" 3" each needed a...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.2 - Which would be the best workholding device for...Ch. 4.3 - List five drill press safety guidelines.Ch. 4.3 - Briefly define the term cutting speed.Ch. 4.3 - What unit of measure is used to define cutting...Ch. 4.3 - What is feed, and how is feed stated for drill...Ch. 4.3 - Briefly describe two methods for locating hole...Ch. 4.3 - What is spotting and why is it performed?Ch. 4.3 - What is pecking, or peck drilling?Ch. 4.3 - Briefly contrast the speed and feed differences...Ch. 4.3 - What drill press component can be used to control...Ch. 4.3 - Calculate feed depth for a 90-degree countersink...Ch. 4.3 - Calculate feed depth for an 82-degree countersink...Ch. 4.3 - What benefit does tapping on the drill press offer...Ch. 4.3 - How many turns must a 1/4-20 tap be turned into a...Ch. 4.3 - Prob. 14RQ
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