Precision Machining Technology
3rd Edition
ISBN: 9781337795302
Author: Peter, Hoffman.
Publisher: Cengage Learning,
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Textbook Question
Chapter 3.2, Problem 5RQ
What two angles can be laid out with the combination square?
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Students have asked these similar questions
A triangular distributed load of max intensity w acts on beam
AB. The beam is supported by a pin at A and member CD,
which is connected by pins at C and D respectively.
Determine the largest load intensity, Wmax, that can be
applied if the pin at D can support a maximum force of
18000 N. Also determine the reactions at A and C
and express each answer in Cartesian components. Assume
the masses of both beam and member ✓ are
negligible.
Dwas
шал
=
A
BY NC SA
2016 Eric Davishahl
C
D
-a-
Ур
-b-
X
B
W
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
a
6.6 m
b
11.88 m
C
4.29 m
The maximum load intensity is
=
wmax
N/m.
The reaction at A is A =
The reaction at C is
=
i+
Ĵ N.
ĴN.
12
i+
The beam is supported by a pin at B and a roller at C and is
subjected to the loading shown with w =110 lb/ft, and F
205 lb.
a.) If M
=
2,590 ft-lb, determine the support reactions at B
and C. Report your answers in both Cartesian components.
b.) Determine the largest magnitude of the applied couple M
for which the beam is still properly supported in equilibrium
with the pin and roller as shown.
2013 Michael Swanbom
CC
BY NC SA
M
ру
W
B⚫
C
F
ka
b
Values for dimensions on the figure are given in the following
table. Note the figure may not be to scale.
Variable Value
a
3.2 ft
b
6.4 ft
C
3 ft
a.) The reaction at B is B =
The reaction at C is C =
ĵ lb.
i+
Ĵ lb.
b.) The largest couple that can be applied is M
ft-lb.
==
i+
The beam ABC has a mass of 79.0 kg and is supported by
the rope BDC that runs through the frictionless pulley at D
. The winch at C has a mass of 36.5 kg. The tension in the
rope acts on the beam at points B and C and counteracts
the moments due to the beam's weight (acting vertically at
the midpoint of its length) and the weight of the winch
(acting vertically at point C) such that the resultant moment
about point A is equal to zero. Assume that rope segment
CD is vertical and note that rope segment BD is NOT
necessarily perpendicular to the beam.
a.) Compute the tension in the rope.
b.) Model the two forces the rope exerts on the beam as a
single equivalent force and couple moment acting at point B.
Enter your answer in Cartesian components.
c.) Model the two forces the rope exerts on the beam as a
single equivalent force (no couple) and determine the
distance from A to the point along the beam where the
equivalent force acts (measured parallel to the beam from A
). Enter your answer…
Chapter 3 Solutions
Precision Machining Technology
Ch. 3.1 - Information such as tolerances and scale can be...Ch. 3.1 - What view of a drawing usually shows the most...Ch. 3.1 - Prob. 3RQCh. 3.1 - The line type used to show edges of an object that...Ch. 3.1 - What line type is used to show edges of an object...Ch. 3.1 - What two line types work together to show sizes on...Ch. 3.1 - Identify the line types labeled in the print...Ch. 3.1 - Define and briefly describe the following...Ch. 3.1 - A dimension listed on an engineering drawing is...Ch. 3.1 - List and briefly describe the three types of...
Ch. 3.1 - Briefly describe the difference between a...Ch. 3.1 - The relationship between sizes of mating parts is...Ch. 3.1 - What does GDT stand for?Ch. 3.1 - A plane used as a reference for dimensions is...Ch. 3.1 - A GDT symbol and the amount of tolerance are shown...Ch. 3.1 - What are the five categories of symbols used in...Ch. 3.1 - What is a feature of size?Ch. 3.1 - Briefly explain the benefit of a position...Ch. 3.2 - Prob. 1RQCh. 3.2 - What is the purpose of layout fluid (dye)?Ch. 3.2 - Prob. 3RQCh. 3.2 - Briefly define a scriber and its use.Ch. 3.2 - What two angles can be laid out with the...Ch. 3.2 - What two tasks can a divider be used to perform?Ch. 3.2 - What safety precautions should be observed when...Ch. 3.2 - What would the divider setting be to scribe a...Ch. 3.2 - What would the divider setting be to scribe an arc...Ch. 3.2 - Prob. 10RQCh. 3.2 - Prob. 11RQCh. 3.2 - Briefly describe the use of a surface gage.Ch. 3.3 - What are three safety rules to observe when using...Ch. 3.3 - List three types of screwdriver tips.Ch. 3.3 - What is the advantage of using slip joint pliers?Ch. 3.3 - What is an advantage of using locking pliers?Ch. 3.3 - What are two uses for a ball peen hammer?Ch. 3.3 - What is the advantage of a soft face hammer?Ch. 3.3 - In what situation would a box-end wrench be chosen...Ch. 3.3 - List two precautions to observe when using...Ch. 3.3 - What is one method of preventing damage to work...Ch. 3.3 - List three safety precautions to be observed when...Ch. 3.3 - In which direction should hacksaw blade teeth...Ch. 3.3 - List two safety precautions that should be...Ch. 3.3 - Will a single-cut or a double-cut file remove...Ch. 3.3 - Will a single-cut or a double-cut file produce a...Ch. 3.3 - ___________ and _________ are two common filing...Ch. 3.3 - What tool is used to clean a file?Ch. 3.3 - What are the two forms of abrasives used in...Ch. 3.4 - Sawing machines can be divided into roughly four...Ch. 3.4 - The vertical band saw is particularly useful, as...Ch. 3.4 - The horizontal band saw is ideal for cutting...Ch. 3.4 - Cutting action on the power hacksaw is very...Ch. 3.4 - List three safety precautions to observe when...Ch. 3.4 - Briefly describe the process to prepare for...Ch. 3.4 - List three safety precautions to observe when...Ch. 3.4 - What type of band saw blade has HSS teeth welded...Ch. 3.4 - How many saw teeth should be engaged in the...Ch. 3.4 - Name the three different types of tooth patterns.Ch. 3.4 - What are the three types of tooth set and why is...Ch. 3.4 - The slot created in a workpiece by the saw blade...Ch. 3.4 - Explain how to use a push stick.Ch. 3.4 - Saws should be ____________ _____________ when a...Ch. 3.4 - Saw guides should be mounted ________ above the...Ch. 3.4 - Why must a band saw blade be annealed after...Ch. 3.4 - Why does a band saw blade need to be ground after...Ch. 3.4 - Clearance between the vertical band saw guides and...Ch. 3.4 - Band saw cutting speeds are given in _________.Ch. 3.5 - What is the main benefit of offhand abrasive...Ch. 3.5 - What type of metals should not be ground on a...Ch. 3.5 - Which wheel is finer, a 60 grit or a 36 grit?Ch. 3.5 - If a grinder runs at 3400 RPM and you have a wheel...Ch. 3.5 - How is a ring test performed?Ch. 3.5 - Why is it necessary to have blotters on both sides...Ch. 3.5 - The maximum distance that a spark breaker and tool...Ch. 3.5 - When should a grinding wheel be dressed?Ch. 3.5 - Where should you stand when using a grinder?Ch. 3.6 - Define drilling.Ch. 3.6 - What factors might determine when a hole must be...Ch. 3.6 - Prob. 3RQCh. 3.6 - Explain the purpose of a counterbore.Ch. 3.6 - What is the purpose of the pilot on a counterbore?Ch. 3.6 - What should be done as a drill nears the...Ch. 3.6 - Define thread as it relates to benchwork.Ch. 3.6 - Explain the major diameter of a thread.Ch. 3.6 - What is the TPI of a -20 thread?Ch. 3.6 - Name two types of tap wrenches.Ch. 3.6 - A 3/8-16 threaded hole needs to be tapped deeper....
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