Pendulum+Lab


 * __Objective:__** Measure the acceleration of gravity using a pendulum. Verify that mass and amplitude don't affect period.

media type="file" key="Pendulum Lab!.swf" width="360" height="270"
 * __Tutorial__:**

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 * __Lab:__**

1. Set the length of the pendulum to any length. (m) 2. Set the mass. (kg) -Leave all the settings the same as they appear when you open up the application, but move the friction over three spaces. 3. Start the pendulum at an amplitude below 50 degress. 4. Record the time for amplitude using the photogate time (used by checking the box next to photogate timer). 5. Repeat step 4 with an amplitude greater than or equal to 50 degrees. 6. Adjust to a heavier mass and repeat steps 3-5. 7. Adjust the length of the pendulum and repeat steps 2-6.
 * __Data Collection Technique:__**

1. What is the acceleration of gravity? ( Hint: use the equation 2π/T = (g/L)^.5 ) -Caluclate for each data set -Compute average 2. Do mass and amplitude affect the period according to your testing? -Support answer with calculations 3. Was your value for //g// different than the actual value for //g//?
 * __Data Analysis:__**

__**Graphical Analysis:**__ Graphical analysis is not needed because graphs are used for their slope or for the area under the line, neither of which apply to these results. The results here are simply comparing experimental values to a known, actual value.

[(actual value - experimental value)/actual value] * 100% Percent error is useful and applicable because it directly compares the calculation of the acceleration of gravity to the actual value accepted as the acceleration of gravity.
 * __Percent Error:__**


 * DO NOT USE THE VALUES FROM THE EXAMPLE LAB. IF YOU DO, NO CREDIT WILL BE GIVEN.*