Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

OrthodoxMan Group Title

A 5000-kg truck drives over a pothole in the road that causes thetruck to push down on all four springs a distance of 4.0 cm. If energy is conserved and the springs obey Hooke’s law, calculate thespring constant for each sprin

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. NotTim Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Steps to doing a physics question. 1. Draw a diagram. 2. List the variables. 3. Determine the equation(s) involved.

    • 2 years ago
  2. NotTim Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    m=5000kg d= 4.0cm=0.04m You are looking for k=? hooke's law is f=-kx.

    • 2 years ago
  3. OrthodoxMan Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Is the total energy = gravitational potential energy + elastic potential energy ?

    • 2 years ago
  4. NotTim Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    i think so.

    • 2 years ago
  5. NotTim Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    you're your own best thinker.

    • 2 years ago
  6. OrthodoxMan Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    How do you get force?

    • 2 years ago
  7. s3a Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Force caused by gravity is: F = m(-g) = -mg = -(5000kg)(9.8N/kg) (negative means downward) F = -49000 N (negative means downward) F = k(Δy) -49000 = k(-4) (Δy is negative because the initial position is at 0 meters and the final position is at -4 metres so Δy = -4 - 0 = -4 metres. Also notice that Δy being negative means that the truck went downward by 4 meters when the pot hole was hit.) (When people say F = -kx, you treat x as the distance that was moved while ignoring the sign but the way I did it makes you systematically think about it.) -49000/(-4) = 49000/4 = k = 12250 N/m (This is the spring constant - it means that in order to move the spring by 1 meter from its natural position where it would remain if nothing was forcefully compressing or stretching it, 12250 N of force would be required.)

    • 2 years ago
  8. OrthodoxMan Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    it's actually 4cm.....

    • 2 years ago
  9. OrthodoxMan Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    but nice try tho. Your answer is well structured.

    • 2 years ago
  10. s3a Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Lol, oops. Four meters would be quite a fall. :D

    • 2 years ago
    • Attachments:

See more questions >>>

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.