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: Homework help- centripetal force

  1. Feb 8, 2004 #1
    If there is a car with a mass of 1200 kg and the radius of the curvature is 25m, and the speed is 43km/h, what is the acceleration?

    How do I find the acceleration

    At what speed would the centripetal force equal the force of gravity? ( I got 15.7 m/s but I'm not sure if this is right)
    If the car was going faster than the speed calculated above, what would happen to the car?

  2. jcsd
  3. Feb 8, 2004 #2


    User Avatar
    Science Advisor

    If the car is going at a constant speed on a round track with a given radius, the acceleration is

    [tex]a = \frac{V^2}{r}[/tex]

    v is instantaneous velocity (speed) and r is radius.

    I got the same velocity as you (15.66 m/s)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook