A disk with mass m = 5.7 kg and radius R = 0.43 m hangs from a rope attached to the ceiling. The disk spins on its axis at a dis
tance r = 1.56 m from the rope and at a frequency f = 20 rev/s (with a direction shown by the arrow). What is the magnitude of the angular momentum of the spinning disk? ...?
Li=Iw Li=1/2 MR^2 * w w = 2pi*angular frequency <span>Li=1/2 MR^2 * (2pi*angular frequency) </span> Substituting:
Li = 1/2*5.7kg*0.43m^2*2*pi*20rev/s Li = 66.22
Therefore, the magnitude of the angular momentum is 66.22.
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It really does not help because friction is slowing the players down having to put more energy at what they are doing it would be harder on ice which has about no friction you do not have to put alot of energy doing it