2-oct-2014Relationship between angular speed (ω) and angle of the string above the vertical (θ) for a particular rotating apparatus.

1.Set up the equirement as showen.

2. Measure the hight and lengh of the arm and the lengh of the string.

3.As the hanging mass is spining. Measure the time uses to spin ten periods.

The measurement and angular speed and the angle of the srting above the vertical is 

5.Use excel to do the preditcition of the angular speed and compare with the actural angular speed.

 

 

Comparing the  E and J columns, we can find the angular speed we predicted are very colse to the angular speed we measured. So this formular is correct.