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Homework Help: Problem 7.46: Riding a Loop-the-loop

  1. Feb 28, 2008 #1
    1. The problem statement, all variables and given/known data

    A car in an amusement park ride rolls without friction around the track shown in the figure . It starts from rest at point at a height above the bottom of the loop. Treat the car as a particle.

    What is the minimum value of (in terms of ) such that the car moves around the loop without falling off at the top (point )?

    If the car starts at height 4.00 and the radius is = 25.0 , compute the speed of the passengers when the car is at point , which is at the end of a horizontal diameter.

    2. Relevant equations

    mgh = 1/2 mv^2

    3. The attempt at a solution

    we know that h = 2 R because it's the diameter but other than that i am lost
     
  2. jcsd
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