Purpose: To show that potential energy can be converted to kinetic energy.

Materials:

Air Table

String

Spark Timer

Carbon Paper

Pulley

Paper

Weight

Procedure:

Watch the video.

Print off the data sheet. | [disregard the + drawings on the sheet]

Observations and Data:

The mass on the scale is 200g.

The spark timer is set to 0.1 seconds.

Calculate the potential energy at the start:

In all calculations use "m" as being equal to only the mass that is falling; "h" is measured from the length of the data sheet (first measurable dot to the last measurable dot)

"g" is calculated from the data sheet - calculate the velocity of the object at the start of the data sheet (V_{A}) and at the end (V_{B}). Hint: You can measure the distance the object travells and you know the time between each dot.

Calculate the kinetic energy at the end Hint: v is actually V_{B}

Calculate the percent difference

Conclusion:

State the percent difference between E_{k} and E_{p} and provide reasons to support the difference.

What law was proved in this lab, and what does it state.