Posted by hannah on Sunday, November 14, 2010 at 6:29pm.
What length pendulum will produce a period of 1.0s?

physics  Henry, Wednesday, November 17, 2010 at 6:00pm
t = 2p1*sqrt(l/g),
t^2 = 4 * (pi)^2 * l/g.
t in seconds.
l in meters or cm.
g = acceleration due to gravity:
9.8 m/s^2 or 980 cm/s^2.
NOTE: l and g should both be in m/s^2
or cm/s^2.
t^2 = 4 * 9.87 * l/9.8 = 1^2,
39.48l / 9.8 = 1,
4.03l = 1,
l = 1 / 4.03 = 0.248 m = 24.8 cm.
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