Name _______________________ # ______                            Date __________________

Regents Physics                                                                             Mr. Mangiacapre

 

Period And Length Of A Pendulum

 

Word-process this lab using the standard format we have used all along.

 

Notes from teacher discussion -  Use the information below in your introduction  - 

 

Why is an understanding the pendulum important? __________________________________

____________________________________________________________________________

 

Period - ____________________________________________________________________

 

What effects the period of a pendulum?   What doesn’t?______________________

 

______________________________________________________________________________

 

Purpose:      (a) To find the mathematical relationship between the period (T) of a pendulum and it's length.

                 (b) To come up with an equation that relates period to length using
       y = mx+ b (using (T2  vs. l) plot)

(c) To use the equation you found to find the period of a pendulum with a length of  _________
         (to be announced next week)
(d) To use the equation: to calculate the acceleration due to gravity (g).
         

 

 

Important: Measuring the length of the pendulum

 

 

 

 

 

 

 

 

 


       

 

     

 

 

 

 

***Measure from the top pivot point of the string to the MIDDLE of the bob

 

   
Data  (Reproduce this data table in the SIMPLE TABLE format you've used all along)
 

 

 

Length

(cm)

 

Time for 10 vibrations

(second)

 

Period

(Time for one vibration)

(second)

 

Period 2

(second)2

0

 

0

0

0

10

 

 

 

 

20

 

 

 

 

30

 

 

 

 

40

 

 

 

 

50

 

 

 

 



Plotting Data

 

First Plot  - Period vs Length                   /        Second Plot - Period 2  vs Length


Put L on the vertical axis for both plots

 



Finding the Equation using y = mx + b for the second graph

 

y variable on the second plot? ______ (Variable on vertical axis)

x variable on the second plot? ______

m value (slope)                     ______

b value (y intercept)              ______

 

Substitute all theses values into y = mx + b

 

 

 

 

Mandatory - On page 2 of your lab: Replicate the pendulum drawing on the first page of this worksheet using your word processors' drawing tools. Give your drawing a centered title and be sure to include the label and the caption.