Pendulum
Spring
Waves
Misc
100
What provides the restoring force in a pendulum?
gravity
100
What does k stand for and what is it measured in? (#8)
spring constant; N/m
100
What kind of wave is this? What is the definition of this type of wave? (1st part of #19)
Transverse; particles in the medium move perpendicular to the direction of the wave's motion
100
What are the four equations for period and frequency that you need to have memorized? (#2)
T = t/#osc T = 1/f
f = #osc/t f = 1/T
200
Where is the pendulum moving fastest and why? (#5)
At the bottom. That is the point where it has the least PE, so it has the most KE
200
What provides the restoring force in a spring?
the spring itself.
200
What do waves do/not do? (#10)
waves transport energy without transporting matter
200
Draw constructive and destructive interference (#14-15)
300
What will happen to the period of a pendulum when you increase the mass?
nothing
300
What will happen to the period of a spring when you increase the mass?
The period will increase
300
What kind of wave is this? Also, give the definition of this type of wave (2nd part of #19)
longitudinal; the particles in the medium travel parallel to the direction of the wave's velocity
300
What happens to the frequency of a wave when you increase its wavelength? (#13)
It decreases. Longer wavelength means that there are fewer waves that need to be made in a given amount of times. Thus, the frequency of waves is lower.
400
What would happen to the frequency of a pendulum if you took it to the moon? Why
It would slow down. g is smaller on the moon, which means T would go up. If T goes up, f goes down.
400
When you hang 100 g on Spring A, it hangs down 20 cm. When you hang 100 g on Spring B, it hangs down 30 cm. Which one will have a longer period? Explain
Spring B. Since it hangs down farther, it has a weaker spring constant. Period is inversely proportional to spring constant.
400
Two waves travel along the same rope. One has a large amplitude and a small frequency. The other has a small amplitude and a large frequency. Which one has a greater wave speed? (#23)
Neither. The only thing that affects the speed of a wave is the medium it travels through.
400
Name one way in which period and wavelength are similar. And then name one way in which they are different. (#21)
wavelength and period are both ways of measuring one oscillation of a wave. Wavelength is the distance of one oscillation, whereas period is the time of one oscillation.