PASCO
MAIN PROCEDURE
   
In this experiment, students use their experimental data and theoretical calculations to stamp an egg with a mass suspended by a spring.

 

Qty. Item or Product Product Number
1 Egg  
1 Pendulum Clamp SE-9443
1 Large Rod Base ME-8735
1 Rod, 120 cm Long ME-8741
1 Slinky SE-8760
1 Hooked Mass Set SE-8759
1 Carbon Paper SE-8693


    Part 1: Spring Constant


    Figure 1

    Figure 2
    Extension (cm)
    Mass (g)
     
    20
     
    50
     
    70
     
    100
     
    150









    1. Determine the original position. Measure the length to the bottom of the suspended slinky. (Figure 1)

    2. Find the extension. Attach a 20 g mass to the bottom hook of the slinky. Measure the extension, the distance from the original position. (Figure 2) Enter the values of the extension in the data table above.

    3. Repeat steps 1 and 2. Remember to always measure from the original position.

    Extension (m)
    Force (N)
     
     
     
     
     
     
     
     
     
     

    1. Convert the masses in grams into forces in Newtons. Enter these values into the data table in DataStudio.

    2. Convert the extensions in centimeters to meters. Enter these values into the data table in DataStudio.

    3. Create an F vs. x graph. Use the graph to determine the spring constant of the slinkey.
    See Data Analysis for DataStudio

    Part 2: The Egg Stamper
      Your teacher will set-up the Egg Stamper as in the picture to the far right. The hook of the 100 g mass hangs just above the bottom hook of the slinky.

      Calculation:
      Using your experimental data, calculate the height necessary to suspend the Egg Stamper so that when the string is cut, the bottom of the mass will just touch the egg enough to stamp it. Make careful calculations. Nobody wants a scrambled egg in this lab!

      Presentation:
      Present your calculations to your class mates. Show all of your work. Discuss the physical meaning of the slope.

      Cut the string to test your solution!