RosieRudoCink RosieRudoCink
  • 01-05-2017
  • Physics
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How long should you make a simple pendulum so its period is 200. ms??

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Arnold11
Arnold11 Arnold11
  • 08-05-2017
So we want to know how long should we make the simple pendulum so it's period is T=200 ms = 0.2 s. Since the formula for simple pendulum is T=2*pi*sqrt(L/g) where T is the period, L is the length and g=9.81 m/s^2. Now we need to invert the formula to get the length: T/2pi=sqrt(L/g), we square both sides of the equation: (T/2pi)^2=L/g and multiply both sides with g:
g*(T/2pi)^2=L. Now we input the numbers and get that the length L= 0.00995m.
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