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: Angular momentum - can you start spinning while falling?

  1. Nov 6, 2006 #1
    -- A person is hanging motionless from a vertical rop over a swimming pool. She lets go of the rope and drops straight down. After letting go, is it possible for her to curl into a ball and start spinning? Justify your answer....is there going to be angular velocity? will that allow her to spin?

    -- Sit-ups are more difficult to do with your hands placed behind your head instead of on your stomach. Why?.....does it have to do with moment of inertia? if not i have no idea where to go from here?!
  2. jcsd
  3. Nov 6, 2006 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    See comments in red above.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook