Mechanical Energy Conservation, Part II

Student Name  

θ1 (rad) θ2 (rad) Idisc (kg m2) rpulley (m)
mhang. (kg) t1 (s) t2 (s) ω02 (rad2/s2) ω12 (rad2/s2) ω22 (rad2/s2) ME0 (J) ME1 (J) ME2 (J)

The default angular positions are for the "0 - 1 - 2 and back" procedure. They may be reset if necessary.

Calculation Procedure

  • Enter the average calculated moment of inertia for your table and the radius of the pulley.
  • In each row, enter the values for the hanging mass and the corresponding two times.
  • Click "Calculate Step 1".
  • Use the displayed data to calculate the three values of the mechanical energy in the first row.
  • Enter these values in the last three columns.
  • Click "Calculate Step 2".
  • If the values for the mechanical energies that you have entered are correct, you are done. Otherwise, recalculate and re-enter.
    Note: The calculation assumes that the potential energy is zero at the lowest position of the hanging mass.

    Credits
    Authored by Kevork Spartalian, University of Vermont.