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

zaphod Group Title

A particle of mass 5kg is pulled along a smooth horizontal surfce by a horizontal string> if the acc of particle is 3ms-2find the tension

  • 2 years ago
  • 2 years ago

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

    @Callisto can i kw hw to apply the forces?

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

    |dw:1347114640040:dw| Consider the horizontal, Summation F = T = ma = 5(3), isn't it?

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

    |dw:1347114778579:dw| The vertical forces cancel out..

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

    Note that smooth = friction = 0N Note sure if I'm in the right direction :|

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

    yes |dw:1347114907153:dw|

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

    Why did you add that T?

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

    in a horizontal string tension acts oppostely

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

    Hmm.. I'm actually considering this part..|dw:1347115073162:dw|

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

    yes then continue?

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

    For that system, weight is balanced by the normal reaction. So, vertical forces cancel. Consider the horizontal force, since the surface is 'smooth', there is no friction acting on the particle. The only horizontal force acting on the system is tension. So, by Newton's 2nd law, T - f = ma , where f = 0, m=5 and a=3 So, you can find T.

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

    f= 0N, m=5kg and a=3ms^-2

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

    :) get it why is force = 0

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

    Tension=5kg times 3m/s=15N

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

    f is friction acting on the system by the surface. But the surface is smooth, so no friction acting on the system

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

    Any questions?

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

    nope clear :)

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

    Great!

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

    i thought there is an external force making the particle move, anyway nw i understnd

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

    That external force is the tension. If you don't pull the string, there is no tension, the block doesn't move. Perhaps you can consider that system only. I mean the force applied to that system.

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

    yes thanks u so much :)

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

    Welcome :)

    • 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.