In an oscillating spring, where is the maximum acceleration achieved?
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Transcript of In an oscillating spring, where is the maximum acceleration achieved?
- Slide 1
- Slide 2
- In an oscillating spring, where is the maximum acceleration achieved?
- Slide 3
- Answer: At the maximum displacement positions
- Slide 4
- When the spring is stretched and released, what direction does the spring force act?
- Slide 5
- Toward the equilibrium position
- Slide 6
- When the spring is stretched and released, when is speed equal to 0?
- Slide 7
- Answer: at the point of maximum displacement.
- Slide 8
- Often, the negative sign in Hookes Law is ignored... Why is this possible?
- Slide 9
- Answer: because the sign indicates that the force and displacement are in opposite direcitons
- Slide 10
- What are the units for k?
- Slide 11
- Answer: N/m
- Slide 12
- When using Hookes Law, what units does the displacement value need to be in?
- Slide 13
- Answer: meters
- Slide 14
- In an oscillating system, where is the greatest kinetic energy located?
- Slide 15
- Answer: At the equilibrium positon
- Slide 16
- If the mass of a pendulum cut in half, what happens to the period?
- Slide 17
- Answer: no change, mass does not affect the period of a pendulum
- Slide 18
- If the length of a pendulum is increased by 16 times, what happens to the period?
- Slide 19
- Answer: increases 4 times longer
- Slide 20
- If a pendulum clock keeps perfect time at the base of a mountain, will it also keep perfect time when moved to the top of the mountain? Why.
- Slide 21
- No, the gravity is slightly different so the period will change also
- Slide 22
- The moons gravity is 1/6 of Earth. If a mass spring system with a mass of 2 kg has a period of 3 sec on Earth, what will be the period on the moon?
- Slide 23
- 3 sec, gravity does not affect mass- spring systems.
- Slide 24
- If you know the cycles and time, how do you find frequency?
- Slide 25
- Cycles divided by sec
- Slide 26
- Given period, how do you find frequency?
- Slide 27
- 1 divided by the period, they are recipricals
- Slide 28
- If a grandfather clock is running slow, how can you adjust the length of the pendulum to correct the time?
- Slide 29
- Shorten the length to shorten the period
- Slide 30
- Problems
- Slide 31
- If a force of 50 N stretches a spring.10 m, what is the spring constant?
- Slide 32
- 500 N/m
- Slide 33
- A mass on a spring vibrates in simple harmonic motion at an amplitude of 8.0 cm. If the mass of the object is.20 kg and the spring constant is 130 N/m, what is the frequency?
- Slide 34
- 4.0 Hz
- Slide 35
- On the planet Xenos, an astronaut observes that a 1.00 m long pendulum has a period of 1.50 s. What is the free-fall acceleration on Xenos?
- Slide 36
- 17.5 m/s 2
- Slide 37
- A pendulum goes past the equilibrium position once every 2 seconds, what is frequency of the pendulum?
- Slide 38
- .25 Hz