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!

concept guidance

  1. Jan 23, 2008 #1
    how to solve pulley related rotational mechanics problems....

    please guide me through...

    the ques are of the kind...

    mass is attached to a pulley which is further attched to larger pulley...

    and the moment of inertia of both along wid their radius is given...

    mass of the load is given...

    asks to calculate tension between the wire joining the two pulleys...

    what should be the intial cocept...
     
  2. jcsd
  3. Jan 23, 2008 #2

    andrevdh

    User Avatar
    Homework Helper

    Have you tried

    loss in PE of load = gain of KE of pulleys, load and trolley ?
     
    Last edited: Jan 23, 2008
  4. Jan 23, 2008 #3
    Thanks Bro..shall Do It...
     
  5. Jan 24, 2008 #4

    andrevdh

    User Avatar
    Homework Helper

    Note that the acceleration of the system (out of rest) when the load has dropped through a distance h is given by:

    [tex]v^2 = 2ah[/tex]

    [tex]a = \frac{v^2}{2h}[/tex]
     
  6. Jan 25, 2008 #5
    hey thanks a million times frnz but that guidance is not enough for me to solve these kind of problems..

    A string is wrapped around a wheel of moment of inertia=.20 kgm^2 and radius = 10 cm.
    It goes through a light pulley of radius 5 cm and M.I=.10 kg m^2, to support a mass of 2kg.
    Find the tension in the part of string joining the pulleys and and the acceleration of the block...

    REALLY HAVING TROUBLE CALCULATING NET TORQUE AND CONSTRAINT RELATIONS..

    PLS GUIDE ME THROUGH FRNZ..

    IMAGE ATTACHED..
     
    Last edited: Feb 29, 2008
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: concept guidance
  1. Physics Guidance (Replies: 2)

  2. Radiation concepts (Replies: 6)

  3. Friction Concepts (Replies: 3)

  4. The Concept of Work (Replies: 5)

  5. Entropy concept (Replies: 3)

Loading...