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Falling Elevator - Projectiles

  1. May 25, 2014 #1
    What would be seen if a ball were projected at an angle to the horizontal in a falling elevator? Would the path be parabolic as always? And why?
     
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  3. May 25, 2014 #2

    Simon Bridge

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    Try working out the problem in an inertial frame, and then working out what happens from the POV of someone falling with the lift.

    Or another way: you have heard of "free fall" right?
    What happens to ball's thrown in free fall?
     
  4. May 25, 2014 #3
    The path would be parabolic whether or not the reference frame was accelerated?
     
  5. May 25, 2014 #4

    ZapperZ

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    Hint: The "vomit" airplane that astronauts practice in to simulate zero-g is an airplane in free-fall.

    So think again, what do you think the path should look like?

    Zz.
     
  6. May 25, 2014 #5

    Doc Al

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    Imagine you released a ball from your hand while in that free falling elevator. What would happen?
     
  7. May 25, 2014 #6
    From my reference frame the ball would be stationary.
     
  8. May 25, 2014 #7

    Doc Al

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    Good! Now what happens if you gave it an initial velocity?
     
  9. May 25, 2014 #8
    It would simply move in a straight line.
     
  10. May 25, 2014 #9

    Doc Al

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    Yep.
     
  11. May 25, 2014 #10
    So the velocity of the ball relative to me would be constant?
     
  12. May 25, 2014 #11

    Doc Al

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    That's correct.
     
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