1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: Circular motion

  1. Feb 6, 2010 #1
    hi,
    could some one please explain where i am wrong?

    A mass M of 5.80E-1 kg slides inside a hoop of radius R=1.50 m with negligible friction. When M is at the top, it has a speed of 4.43 m/s. Calculate the size of the force with which the M pushes on the hoop when M is at an angle of 46.0°.

    i guess what i need to find is the difference between the perpendicular to the hoop component of mg and the centr. force. the centr. force needs the v in that point
    which i can find using energy conservation.
    i get the wrong answer. i think i am not wrong calculating. maybe what i am asked is not
    what i end up calculating

    thanks
     
  2. jcsd
  3. Feb 6, 2010 #2
    I do not see a problem with your solution here. Showing the calculations helps to help you.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook