1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Tension with acceleration

  1. Sep 14, 2008 #1
    1. The problem statement, all variables and given/known data
    A sphere of mass of 1.55 kg is accelerated upwards by a string to which the sphere is attached. Its speed increases from 2.21 m/s to 5.30 m/s in a time of 1.62 s. Calculate the tension in the string, assuming that the tension remains constant during that time.


    2. Relevant equations
    a = (delta)V/(delta)t
    T = m(g + a)
    m = wg


    3. The attempt at a solution

    a = (5.30 - 2.21)/1.62 = 1.91m/s^2
    m = 1.55*9.8 = 15.19
    T = 15.19(9.8 + 1.91) = 177.87 N
     
  2. jcsd
  3. Sep 14, 2008 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Good.
    Not good. You're thinking of w = mg.

    Good.
    Not good. m = 1.55 kg (it's given!).
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Tension with acceleration
  1. Tension and acceleration (Replies: 18)

Loading...