PSN-L Email List Message

Subject: Pendulum in a fluid?
From: tchannel1@............
Date: Mon, 18 Aug 2008 11:44:15 -0600


Hi All,   Just a thought...Has anyone explored a simple 36"? pendulum, =
say having a 2? second period, then containing the pendulum in a fluid.  =
The pendulum still should move from side to side, but with a longer =
period?    I have no idea, how to do this, or what the result would be.  =


I think the result would be similar to an "oil damper"....but an oil =
damper does not change the period, does it?

To ask it in a  different way......Picture the 36" vertical pendulum =
swinging in a large tube filled with air,  Now the same pendulum, but =
with the tube filled with water.
Would this change the resulting period?








Hi All,   Just a = thought...Has anyone=20 explored a simple 36"? pendulum, say having a 2? second period, then = containing=20 the pendulum in a fluid.  The pendulum still should move from side = to side,=20 but with a longer period?    I have no idea, how to do = this, or=20 what the result would be.  
 
I think the result would be = similar to an "oil=20 damper"....but an oil damper does not change the period, does = it?
 
To ask it in a  different=20 way......Picture the 36" vertical pendulum swinging in a large tube = filled with=20 air,  Now the same pendulum, but with the tube filled with=20 water.
Would this change the resulting=20 period?
 
Thanks, Ted

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