A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Can someone tell me these when an object moves in simple harmonic motion described by the equation d=4 cos(π/2 t + π/2) where t is measured in seconds and d in inches? https://i.imgur.com/7I5fMBj.jpg

  • This Question is Closed
  1. dan815
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    springs have harmonic motion

  2. dan815
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    period change too

  3. dan815
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    |dw:1438751437725:dw|

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    a. \[ -1 \le cos(x) \le 1 \ so\ -4 \le 4.cos(x) \le 4 \] b.c. \[ cos(x) \ cicle\ are \ 2\pi, \ \ \ 2\pi = t . \frac {\pi}{2} \, \ \rightarrow t = 4s \]\[ freq = \frac{1}{t} \rightarrow freq = \frac {1}{4}\] d. shift left \[ \frac {\pi}{2} \] e. B

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    So the maximum displacement of the object is 4 inches, the frequency is 2π cycles per second, the time required for one cycle is 4 seconds, and the phase shirt is π/2?

  6. dan815
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    no

  7. dan815
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    phase shift is 1 frequency= cycles/second if one cycle takes 4 secs then 1/4th cycle happens in 1 second

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Okay, then the maximum displacement of the object is still 4 inches, the frequency is now 1/4th cycles per second, the time required for one cycle is 4 seconds, and the phase shift is now 1 in.?

  9. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.