OK - I thought A was the amplitude of the motion in meters of arc.
Thanks -
Bob
________________________________________
From: phys-l-bounces@carnot.physics.buffalo.edu [phys-l-bounces@carnot.physics.buffalo.edu] On Behalf Of Bob Sciamanda [treborsci@verizon.net]
Sent: Sunday, February 06, 2011 3:06 PM
To: phys-l@carnot.physics.buffalo.edu
Subject: Re: [Phys-l] real-world mechanics problem
Perhaps you are confusing Xdot with Omega?!?
Xdot is the linear speed.
-----Original Message-----
From: LaMontagne, Bob
Sent: Sunday, February 06, 2011 2:53 PM
To: Forum for Physics Educators
Subject: Re: [Phys-l] real-world mechanics problem
?? x dot = A * sqrt(g/L) is dimensionally correct. Am I missing something?
Bob at PC
________________________________________
From: phys-l-bounces@carnot.physics.buffalo.edu
[phys-l-bounces@carnot.physics.buffalo.edu] On Behalf Of Bob Sciamanda
[treborsci@verizon.net]
Sent: Sunday, February 06, 2011 9:25 AM
To: phys-l@carnot.physics.buffalo.edu
Subject: Re: [Phys-l] real-world mechanics problem
?Not so!
The equation is a correct small angle approximation.
(Your correction doesn't even pass "dimensions muster".)
-----Original Message-----
From: LaMontagne, Bob
Sent: Sunday, February 06, 2011 8:32 AM
To: Forum for Physics Educators
Subject: Re: [Phys-l] real-world mechanics problem
Appears to be a simple mistyping g*L ---> g/L
Bob at PC
________________________________________
From: phys-l-bounces@carnot.physics.buffalo.edu
[phys-l-bounces@carnot.physics.buffalo.edu] On Behalf Of Bob Sciamanda
[treborsci@verizon.net]
Sent: Saturday, February 05, 2011 1:31 PM
To: phys-l@carnot.physics.buffalo.edu
Subject: Re: [Phys-l] real-world mechanics problem