In the \"experiment\" shown here http://www.uvm.edu/~mfuris/INTRO_PHYSLETS/conte

Question

In the "experiment" shown here

http://www.uvm.edu/~mfuris/INTRO_PHYSLETS/contents/mechanics/rotations/ex10_3.html

A mass (between 0.01 kg and 1 kg) is hung by a string from the edge of a massive (between 0 kg and 2 kg) disk-shaped pulley (with a radius between 0.1 and 4 meters) as shown (position is given in meters, time is given in seconds, and angular velocity is given in radians/second).  Restart.

Set the hanging mass to 0.25 kg, the radius of the pulley to 2 m, and vary the mass of the pulley.

Set the mass of the pulley to 0.5 kg, the radius of the pulley to 2 m, and vary the hanging mass.

Set the hanging mass to 0.25 kg, the mass of the pulley to 0.5 kg, and vary the radius of the pulley.

Set the mass of the pulley to 0.5 kg, the hanging mass to 0.25 kg, and the radius of the pulley to 2 m.

Explanation / Answer

Set 1

the angular acceleration and the acceleration both depend on the Mass of the Pulley and they are inversely proportional to the Mass of the pulley

as M increases

both a and ang acc decreases

Set 2

the angular acceleration and the acceleration both depend on the Mass of the hanging body

as m increases

both a and ang acc increases

Set 3

Whatever may be the radius of the pulley Acceleration of the hanging body is constant

and ang acc decreases as radius increases becuase ang acc is inversely proportional to r

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