A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

If a wheel with a radius of 80 inches spins at a rate of 50 revolutions per minute, find the approximate linear velocity in miles per hour/ Use 3.14 for pi. Thank you!

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

    first work out the circumference of the wheel can you do that?

  2. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Circumference = 2 * 3.14 * radius

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

    yes, 2pi r= 502.4

  4. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    = 2* 3.14 * 80 = ?

  5. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    50 revolutions per minute = 50 * 502.4 ins per minute

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

    that's how I get stuck! it's inches to miles and minutes to hours... I've tried it about 5 different ways before I posted. (It's multiple choice, so I know my answers are wrong when they aren't there!)

  7. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm not at my best today - i just said divide by 60 instead of multiply its 50*502.4 * 60 inches per hour then as there are 5280 * 12 inches ina mile mph = 50*502.4 * 60 ------------- 5280*12

  8. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    = 23.79 mph ?

  9. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    is that a choice?

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

    ahhhh! Thanks found my error. I was forgetting the 50 back in the original formula. Early for me too, apparently.

  11. welshfella
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    lol ok

  12. 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.