Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Textbook Question
Chapter 18.3, Problem 3aTH
A T-shaped sheet of uniform thickness has a uniform mass density.
Is the center of mass of the sheet located above point R, below point R, or at point R? Explain your reasoning. (Hint: Do not assume that this board is identical to the one used in the tutorial Equilibrium of rigid bodies.)
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A wedge of total mass M, of metal with uniform thickness 1 m and uniform mass density p (kg/m³) is shown below. The wedge has a base of length
a, and a height of length b. The wedge is supported by two posts. In a previous question, you found that 2CM, the 2 coordinate of the center of
2a
mass of the wedge is located at 2. Find an expression for the normal force by post 2 on the wedge.
3
Post 1
Post 2
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Hi! I already asked this question, but I was provided with the wrong answer.
Three solid, uniform boxes are aligned as in the figure below. Find the x- and y-coordinates (in m) of the center of mass of the three boxes,
measured from the bottom left corner of box A. (Consider the three-box system.)
HINT
X
cm
y em
||
=
Origin
E E
m
0.360 m
A
0.750 kg
0.420 m
B
1.00 kg
0.240 m
с
0.650 kg
0.410 m
X
Chapter 18 Solutions
Tutorials in Introductory Physics
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