Lab #5: Propgated uncertainty in measurements

Purpose: The reason for doing this lab is to have the students practice how to calculate the uncertainty of our measurements when collecting data with the measuring equipment.

The way we accomplish this is by finding the density of three metallic cylinders and then calculate the density of an unknown object.

(In the photo we accidentally put the wrong metal on the wrong name)

Then in order to find the density we used filled in the formula d= (4 m) / (π h d^2).

These were the density. Then we calculated the uncertainty to go with them.

 

We found out in the end we mixed up our rod measurements making the iron not actually 
iron it was lead.

As for the second part of the lab, we had to determine the mass of an unknown weight hanging 
at an angle.

 

First we measure the angle.

Then we looked at the force that it took to hold the weight up. Then we calculated the mass with

measurements.

Once done we used all the measurements along with there uncertainties to calculate the entire

and uncertainty.

Through this were able to calculate the uncertainties of all the tools.