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: Pendulum and circular motion

  1. Apr 2, 2009 #1
    1. The problem statement, all variables and given/known data
    The motions of a pendulum and a planet undergoing circular motion are compared
    a) describe a similarity in their motions
    b)describe a difference in their motion
    c) Outline a differance in the forces acting on the pendulum and the planet

    2. Relevant equations

    3. The attempt at a solution
    a) They both have a displacement of 0?
    b)one is circular, one is not?
    I'm looking for a more thourough answer.
    Last edited: Apr 2, 2009
  2. jcsd
  3. Apr 2, 2009 #2
    a. They are both moving
    b. They are doing different things
    c. The pendulum is affected by the earth's gravity while the planet moves under the influence of the sun.

    No, wait. Those are probably wrong.

    Maybe you should try first.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook