- #1
shocklightnin
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Homework Statement
Trying to create an excel spreadsheet that outputs the angles of a simple pendulum as it slowly comes to a stop.
Homework Equations
so I've used the formula:
θ(t) = θ0cos(squareroot(g/R*t)
where:
θ0= inital angle
g=gravity constant
R= length of string
t=time
i got it off of this website:
http://www.myphysicslab.com/pendulum1.html -where its the answer to the third question.
The Attempt at a Solution
Ive input all of this into a spreadsheet in excel, i was wondering if this is the right equation just to see the output of the angle's descent as the pendulum comes to a stop.
so say you're inital angle is at 90 degrees (you're holding the mass/ball at 90 degrees and then you let it go)
the degree at which it keeps going back and forth from will eventually decrease to zero right? i was just wondering if this was the correct equation for this. if not, could you please help me out?
and if it is:
i have modified the spreadsheet so that the first output of angle in excel will become the next lines' inital angle and repeated it for the following lines. is this a correct way to do this? the output degree does indeed decrease but very slowly. i was just wondering if this is correct.
thank you for your time.