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# Conceptual Questions Chap. 13

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```Conceptual Questions Chap. 13
1.
If a spring is cut in half, what happens to its spring constant?
The force exerted by a spring is proportional to the separation of the coils.
The coil separation of a half-spring will be twice as large as that of the full
spring for a given stretched length of the spring. Thus, each half-spring
will have twice the spring constant of the full spring.
2.
3.
If an object-spring system is hung vertically and set into oscillation, why
does the motion eventually stop?
Friction. This includes both air resistance and damping within the
spring.
If a grandfather clock were running slow, how could we adjust the
length of the pendulum to correct the time?
Shorten the pendulum to decrease the period between ticks.
4.
What happens to the wavelength of a wave on a string when the
frequency is doubled? Assume the tension in the string remains the
same.
If the tension remains the same, the speed of a wave on the string
does not change. This means, from v = lf, that if the frequency is
doubled, the wavelength must decrease by a factor of two.
```
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