Results 1 to 2 of 2
Like Tree1Thanks
  • 1 Post By guinster

Math Help - AQA A2 mechanics 2 help

  1. #1
    Newbie
    Joined
    Jun 2014
    From
    england
    Posts
    3

    AQA A2 mechanics 2 help

    Looking at AQA June 08 MM2B Q7a...Normally at the top of circular motion v is equal or greater than 0 for complete revolutions but somehow they have it equalling ag and it looks like they've disregarded the tension in the string at the top. If anyone can help me please....
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Jun 2014
    From
    Britain
    Posts
    18
    Thanks
    4

    Re: AQA A2 mechanics 2 help

    Hi

    As you know the tension in the string is required for circular motion but there is also the
    force due to gravity which is acting towards the centre of motion at the top the path.

    At the bottom of the path this same force is acting away from the centre of motion.

    There is a minimum speed where just this force (ie mass x g) is acting downwards at the top.

    Regards
    Thanks from topsquark
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. uni mechanics
    Posted in the Advanced Applied Math Forum
    Replies: 3
    Last Post: July 13th 2010, 10:05 AM
  2. Maths Mechanics SUVAT mechanics
    Posted in the Calculus Forum
    Replies: 2
    Last Post: April 27th 2009, 05:55 PM
  3. Maths Mechanics SUVAT mechanics
    Posted in the Pre-Calculus Forum
    Replies: 1
    Last Post: April 27th 2009, 04:44 PM
  4. Help with Mechanics
    Posted in the Advanced Applied Math Forum
    Replies: 1
    Last Post: March 4th 2008, 01:44 PM
  5. Mechanics
    Posted in the Advanced Applied Math Forum
    Replies: 0
    Last Post: January 24th 2008, 07:11 AM

Search Tags


/mathhelpforum @mathhelpforum