Posted by ilker on Thursday, May 31, 2012 at 7:53am.
What is the period of a simple pendulum that is 1.27 m long in each situation?
a) in the physics lab
b) in an elevator accelerating at 2.15 m/s2 upward
c) in an elevator accelerating 2.15 m/s2 downward

physical  bobpursley, Thursday, May 31, 2012 at 9:18am
period= 2PI (Length/acceleration)
a) acceleration=g
b, c ) acceleration = g+ a

physical  bobpursley, Thursday, May 31, 2012 at 9:19am
I in past times made a neat demo for classes. Take a short (1/2 meter) string, with a bob on it, set it into motion at near the floor, then raise it rapidly upward.

physical  ilker, Thursday, May 31, 2012 at 10:44am
thank you very much dude
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