Results 1 to 2 of 2

Math Help - force on a pulley???

  1. #1
    Newbie
    Joined
    Mar 2008
    Posts
    2

    Exclamation force on a pulley???

    a particle of mass 10kg is at rest on a plane inclined at an angle tan-1(3/4) to the horizontal.contact is rough with a coefficient of friction of 0.25.it is connected by means of a light inextensible string passing over a smooth,fixed pulley to a second particle of mass 20kg hanging freely.

    (i) i worked the acceleration out to be 2g/5 (g=9.8)

    (ii) i then worked out the tension in the string to be 12g Newtons

    (iii)FIND THE FORCE ON THE PULLEY? how do i work this out? what is the formula?

    can someone please solve part (iii).
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Forum Admin topsquark's Avatar
    Joined
    Jan 2006
    From
    Wellsville, NY
    Posts
    9,660
    Thanks
    298
    Awards
    1
    Quote Originally Posted by Im doin My best! View Post
    a particle of mass 10kg is at rest on a plane inclined at an angle tan-1(3/4) to the horizontal.contact is rough with a coefficient of friction of 0.25.it is connected by means of a light inextensible string passing over a smooth,fixed pulley to a second particle of mass 20kg hanging freely.

    (i) i worked the acceleration out to be 2g/5 (g=9.8)

    (ii) i then worked out the tension in the string to be 12g Newtons

    (iii)FIND THE FORCE ON THE PULLEY? how do i work this out? what is the formula?

    can someone please solve part (iii).
    The force acting on the pulley will be the vector sum of the two tensions acting at the pulley. So one tension is pulling straight down and a tension of equal magnitude is pulling down the slope.

    -Dan
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 21
    Last Post: July 26th 2010, 04:13 PM
  2. Replies: 1
    Last Post: May 16th 2009, 05:09 AM
  3. pulley problem
    Posted in the Calculus Forum
    Replies: 3
    Last Post: October 27th 2007, 11:17 AM
  4. Pulley question
    Posted in the Advanced Applied Math Forum
    Replies: 4
    Last Post: September 19th 2006, 02:57 PM
  5. Pulley
    Posted in the Advanced Applied Math Forum
    Replies: 1
    Last Post: September 18th 2006, 10:49 AM

Search Tags


/mathhelpforum @mathhelpforum