Section 14.1
Periodic Motion
Practice Test
1.
In Figure 14-4, if you doubled the mass of the pendulum, what effect, if any, would it have on its period?
a.
The new period would be the old period, times the square root of two.
b.
It would have no effect.
c.
The new period would be the old period, divided by the square root of two.
d.
The new period would be half the old period.
Hint
2.
In Figure 14-1, if the spring's constant is 20.0 N/m and x has a value of 0.25 m, what is m equal to?
a.
5.0 kg
b.
0.51 kg
c.
0.63 kg
d.
0.06 kg
Hint
3.
The formula
represents the period of a pendulum, T. What is the period of a 3.5 m-long pendulum on Earth?
a.
3.2 s
b.
3.8 s
c.
4.6 s
d.
1.4 s
Hint
4.
In Figure 14-4, if you quadrupled the length of the string, what effect, if any, would it have on its period?
a.
The period would be doubled.
b.
The period would be halved.
c.
The period would be quadrupled.
d.
It would have no effect.
Hint
5.
In Figure 14-2, if the scale of the graph is 1 block = 10 N on the vertical axis and one block = 2 cm on the horizontal axis, what is the spring constant?
a.
500 N/m
b.
20 N/m
c.
5 N/m
d.
250 N/m
Hint
