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January 30, 2015

January 30, 2015

Posted by **hannah** on Sunday, November 14, 2010 at 6:29pm.

- physics -
**Henry**, Wednesday, November 17, 2010 at 6:00pmt = 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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