Procedure: Use a stopwatch and time how long it takes for the hanging mass to fall and the pulley to rotate five times. Make 5 trials and average the time. Measure the diameter of the pulley. Compare the distance that the mass fell to the linear distance (S) a point on the pulley traveled. Calculate the final vertical speed, Vfy , for the hanging mass. Calculate the final angular speed, ωf, for the pulley. If Vt = ωf r, what is the final tangent speed of the pulley? How does this compare with the final linear speed of the mass? Calculate the linear acceleration, a, for the hanging mass. Calculate the angular acceleration, α, for the pulley. If at = αr, what is the final tangent acceleration of the pulley? How does this compare with the linear acceleration of the mass? Finally, what is the Centripetal Force?

Show your work on all calculations. Here is a list of all the information I need. 1) Mass, 2) Diameter,
3) Radius, 4) Time data table, 5) Angular Displacement, 6) Measured Linear distance,
7) Calculated linear distance, 8) Final Angular Speed,
9) Final vertical velocity, 10) Linear Acceleration,
11) Angular Acceleration, 12) Tangential Velocity,
13) Tangential Acceleration, 14) Centripetal Force. Each person will turn in their own lab.

Mass = 20 g
Diameter = 5.15 cm
Time trials
1) 8.94s 2) 8.5s 3) 8.72s 4) 8.61s 5) 8.64s
Use average time for all calculations.
Length string fell 72 cm