I'm thinking of providing a interactive simulation whereby you choose a beam and the mass hanging from the end - then an animation shows the beam bending to different degrees depending on your choices. I think that I can do this using sprites but I am wondering if there is anything within Physics that would also do it in a more elegant way.
If you know the numbers ahead of time, maybe drawing the beam in Hype and then bending the lines is a way to go.
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I'd agree with @Photics; it might be a bit of gymnastics with javascript to get the underlying physics engine to do gravitational lensing. Instead, you may have better and lighter-weight (no pun intended) results using a vector shape path and animating various shape morphs. You could even put that animation on a separate timeline and use "Control Timeline" on another object to make it interactive.
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