Engineering Mechanics: Statics
8th Edition
ISBN: 9781118807330
Author: James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher: WILEY
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Chapter 1, Problem 8P
Suppose that two nondimensional quantities are exactly
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(200 lb)(0.6 ft)+PABcos30°(0.75 ft)PAB==0184.752 lb
Can you please show all the numbers in this equation so that it would be clear how you get the 184.752 lb in the end.
Q1: Apply appropriate solution method using math principles to prove that "the
pressure at a point in a fluid has the same magnitude in all directions". Support
your answer with sketch.
Answer: Px Pz = Pn P are the mean pressures at the three surfaces in the x- and
z-directions.
Q2: Formulate the issue and identify key variables to prove that [AP = P2 - P, = pg
Az = y, Az], where y, and p are the specific weight and density of the fluid,
respectively. Az is the vertical distance. Support your answer with sketch.
Q3: From fluid mechanics science perspective, define the center of gravity and the
center of pressure.
Q4: Identify the hydrostatic force acting on the top surface of a submerged
rectangular plate by applying principles of engineering for the following cases: 1
tilted plate, (2 vertical plate, and 3 horizontal plate. Support your answer with
sketch.
Q5: By applying principles of fluid mechanics science, define the "rigid-body"
and identify its features.
Q6: Formulate the issue…
A block of metal measures 12 cm by 10 cm by 10 cm.
When the block is hung from a spring scale, as shown in
Figure 3a, the scale reads 30 kg. This is the "true mass"
of the block. Suppose we attempt to measure the block's
mass under water. The same mass, while hanging from
the same scale, is completely submerged in water, as
shown in Figure 3b. What is the reading (in kilograms)
on the spring scale? Show and explain your work.
Scale
Figure 3a
Figure 3b
Chapter 1 Solutions
Engineering Mechanics: Statics
Ch. 1 - Determine the angles made by the vector V=36i+15j...Ch. 1 - Determine the magnitude of the vector sum V=V1+V2...Ch. 1 - For the given vectors V1 and V2 of Prob. 1/2,...Ch. 1 - A force is specified by the vector...Ch. 1 - What is the mass in both slugs and kilograms of a...Ch. 1 - From the gravitational law calculate the weight W...Ch. 1 - Determine the weight in newtons of a woman whose...Ch. 1 - Suppose that two nondimensional quantities are...Ch. 1 - Compute the magnitude F of the force which the sun...Ch. 1 - Determine the small gravitational force F which...
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