Physics

1. A fisherman's scale stretches 3.6 cm when a 2.5-kg fish hangs from it.
What will be the frequency of oscillation if the fish is pulled down 2.7 cm more and released so that it oscillates up and down?

2. Two trains emit 518 Hz whistles. One train is stationary. The conductor on the stationary train hears a 3.1 Hz beat frequency when the other train approaches.
What is the speed of the moving train?

3.When a player's finger presses a guitar string down onto a fret, the length of the vibrating portion of the string is shortened, thereby increasing the string's fundamental frequency. The string's tension and mass per unit length remain unchanged.
If the unfingered length of the string is l= 65 cm, determine the positions x of the first six frets, if each fret raises the pitch of the fundamental by one musical note in comparison to the neighboring fret. On the equally tempered chromatic scale, the ratio of frequencies of neighboring notes is 2^{1/12

  1. 👍 0
  2. 👎 0
  3. 👁 296
asked by Katelyn
  1. I know that K= 680 N/m

    1. 👍 0
    2. 👎 0
    posted by Katelyn
  2. 1. Yes, k = Mg/X = 681 N/m

    The frquency of oscillation does not depend upon how much farther the scale is pulled down. It is just
    f = [1/(2 pi)]*sqrt(k/m)

    2. The frequency of the whistle from the oncoming train must be 521.1 Hz

    I don't have time to do your third question

    We would prefer you post one question at a time. You will probably get answers quicker that way. It is also impportant to show your own work
    The doppler shift ratio is
    3.1/f = V/(340 m/s)
    so V = 340*3.1/518 = 2.0 m/s

    There is a more exact doppler shift formula for moving sources, but that is accurate enough.

    1. 👍 0
    2. 👎 0
    posted by drwls
  3. Ty. I will keep that in mind next time.

    If anyone could help with the last one, I would greatly appreciate it.

    1. 👍 0
    2. 👎 0
    posted by Katelyn

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A fisherman’s scale stretches 3.05 cm when a 2.5-kg fish hangs from it. What will be the frequency of vibration if the fish is pulled down 13.60 cm more and released so that it vibrates up and down?

    asked by Anonymous on March 5, 2013
  2. physics

    A fisherman's scale stretches 2.8 cm. when a 2.1 kg. fish hangs from it. What will be the frequency of vibration if the fish is pulled down and released so that it vibrates up and down?

    asked by nicole on May 3, 2012
  3. physics

    A fisherman's scale stretches 2.3 cm. when a 2.5 kg. fish hangs from it. What will be the frequency of vibration if the fish is pulled down and released so that it vibrates up and down?

    asked by Nicole on May 6, 2013
  4. physics

    A fisherman's scale stretches 2.3 cm. when a 2.1 kg. fish hangs from it. What will be the frequency of vibration if the fish is pulled down and released so that it vibrates up and down?

    asked by kassy on November 20, 2016
  5. Physics

    A fisherman's scale stretches 4.2 cm when a 3.0 kg fish hangs from it. What will be the amplitude and frequency of vibration if the fish is pulled down 2.3 cm more and released so that it vibrates up and down?

    asked by Justin on February 18, 2010
  6. physics

    A fisherman's scale stretches 3.5 cm when a 2.1 kg fish hangs from it. I know that k=590 N/m and f=2.7 Hz. How do I find the amplitude of vibration if the fish is pulled down 3.2 cm more and released so that it vibrates up and

    asked by Anonymous on April 20, 2010
  7. physics

    A fisherman's scale stretches 2.1 cm when a 2.3-kg fish hangs from it. What will be the frequency of vibration if the fish is pulled down 3.8 cm more and released so that it vibrates up and down? if you answer please show your

    asked by Anonymous on June 6, 2018
  8. Physics

    A fisherman's scale stretches 3.6 cm when a 2.7-kg fish hangs from it. (A) What is the spring stiffness constant? (B) What will be the amplitude and frequency of vibration if the fish is pulled down 2.5 cm more and released so

    asked by Anonymous on January 20, 2018
  9. Physics

    A fisherman's scale stretches 2.5cm when a 2.1kg fish hangs from it. What is the spring constant andwhat will be the frequency of vibration if the fish is pulled down and released so that it vibrates up and down?

    asked by Pius on April 25, 2012
  10. physics

    A fisherman's scale stretches 3.5 cm when a 2.1 kg fish hangs from it. What is the spring stiffness constant?

    asked by Anonymous on April 19, 2010
  11. physics

    A fisherman's scale stretches 2.8 cm when a 3.7-kg fish hangs from it. (a) What is the spring constant? (b) What will be the amplitude and frequency of vibration fi the fish is pulled down 2.5 cm more and released so that it

    asked by Kate on January 18, 2010

More Similar Questions