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!

Calc based physics 1 homework help

  1. Dec 9, 2008 #1
    1. The problem statement, all variables and given/known data

    A small cart, circular hoop and a solid cylinder of the same mass (5Kg) are allowed to roll down an incline plane. the length of the plane is 22 meters and the angle of incline is 22 degrees. Find the time it takes for each object to reach the bottom of the incline plane.

    I am totally and utterly lost on how to even start the problem any help at all would be greatly appreciated thanks in advance
  2. jcsd
  3. Dec 9, 2008 #2


    User Avatar
    Gold Member

    I guess it has to see with the moment of inertia and angular acceleration.
    It would be nice if you could find the velocity of the rolling objects (their center of mass' velocity) so that you could find out how much time they'll take to reach the bottom of the inclined plane.
  4. Dec 9, 2008 #3
    how would the moment of inertia even apply to this problem
  5. Dec 9, 2008 #4


    User Avatar
    Gold Member

    Think about it: if an object has a very huge moment of inertia, it will try to resist to roll. So it will go down slower than an object with a little moment of inertia.
  6. Dec 9, 2008 #5
    k he moment of inertia for the hoop and cylinder is no problem but what about the shopping kart
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Calc based physics 1 homework help
  1. Calc homework help (Replies: 3)

  2. Pre-Calc Homework Help (Replies: 19)