Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 2, Problem 34Q
(Indicates a review question, which means it requires only a basic understanding of the material to answer. Questions without this designation typically require integrating or extending the concepts presented thus far.)
. A mass m is attached to a spring with spring constant k, as shown in Figure 2.53. The mass is pulled to the right a distance of 0.2 m and released. Rank the following spring-mass combinations according to their oscillation periods from shortest to longest. If any combinations have the same period, give them the same rank. You should assume that there is no friction between the mass and the horizontal surface.
| (a) k = |
0.5 |
N/m: |
m | 0.25 |
kg |
|
| (b) k = |
0.5 |
N/m: |
m | 0.50 |
kg |
|
| (c) k = |
0.5 |
N/m; |
m | 1.00 |
kg |
|
| (d) k = |
1.0 |
N/m: |
m | 0.25 |
kg |
|
| (e) k = |
1.0 |
N/m: |
m | 0.50 |
kg |
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An object is subjected to a friction force with magnitude 5.49 N, which acts against the object's velocity. What is the work (in J) needed to move the object at constant speed for the following routes?
y (m)
C
B
(5.00, 5.00)
A
x (m)
©
(a) the purple path O to A followed by a return purple path to O
]
(b) the purple path O to C followed by a return blue path to O
]
(c) the blue path O to C followed by a return blue path to O
]
(d) Each of your three answers should be nonzero. What is the significance of this observation?
○ The force of friction is a conservative force.
○ The force of friction is a nonconservative force.
Chapter 2 Solutions
Inquiry into Physics
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