Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

EQTABOT

  • one year ago

a block of mass In = 2.5 kg slides head on into a spring of spring constant k = 320 N/m. When the block stops, it has compressed the spring by 7.5 cm. The coefficient of kinetic friction between block and floor is 0.25. While the block is in contact with the spring and being brought to rest, what are (a) the work done by the spring force and (b) the increase in thermal energy of the block-floor system? (c) What is the block's speed just as it reaches the spring?

  • This Question is Open
  1. mohammed213
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

  2. Will-i-am
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    (a) 240 joules....(b)????.....(c)?????????

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

    lol dude ur awesome...lol that was myself

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

    wait a second

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

    obviously work done by spring force is change in spring potential which is \[kx ^{2}\div2\] increase in thermal enegry is the work done by frictional force which is \[\mu \times normal \times displacement\] adding the above two we get the energy of the block just as it approches the spring \[w = mv ^{2}/2\](kinetic work therom)

  6. 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.