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!

Light attracted to earths gravity

  1. Apr 19, 2012 #1
    Falling light. According to general relativity and the equivalence principle, light is bent by gravity. Consider two tall, perfectly reflecting mirrors exactly 7 m apart and facing each other. A beam of light is directed horizontally through a hole in one of the mirrors 13 m above the ground.

    (a) Determine the time it takes for the light to strike the ground.

    b) The light will undergo N reflections (i.e., N/2 reflections from each mirror) before it strikes the ground. Find N.
     
  2. jcsd
  3. Apr 19, 2012 #2

    phinds

    User Avatar
    Gold Member
    2016 Award

    Homework problems are to be posted using a specific format. Please read the forum rules. You have to show some effort on your part, you can't just ask for the answer.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Light attracted to earths gravity
  1. Gravity on Earth (Replies: 2)

Loading...