Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Jusaquikie

  • 2 years ago

When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.465 m/s2. Block 1 has mass M, block 2 has 4M, and block 3 has 4M. What is the coefficient of kinetic friction between block 2 and the table?

  • This Question is Closed
  1. Jusaquikie
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. Jusaquikie
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1348870732734:dw| Do i need to have the coordinate system i use in X3? i do it to keeo the acceleration all in the same direction. i just don't know if i need to or not.

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

    i picked my Coordinate system beacuse block 3 is larger than block 1

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

    first equasions i get are (x1) FT1-m1g=m1a FT1=m1a+m1g =.465M+9.8M=10.3M (x2) FT3-FT1-Fk=m2a (x3) m3g-FT3=m3a FT3=m3g-m3a = 39.2M-1.86M=37.3 (y2) FN-m2g=0 FN=m2g = 39.2M 3 (x2) (37.3M -10.3M -1.86M)/39.2M = uk = .641 which turns our right lol i was using 39.2M for m2a instead of 1.86M meaning i was multiplying by g and not a. glad i could help.

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

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.