2) In one or two sentences, what is the purpose of this experiment? 3) A large d

Question

2) In one or two sentences, what is the purpose of this experiment? 3) A large disk, Mass M and Radius R, is placed at the center of a track that is able to spin. If a student repeats the procedure from Lab 8 to measure the moment of inertia, will the measured moment of inertia depend on whether the disk can spin or not? If so which will have a LOWEST moment of inertia, A) the free disk, B) the fixed disk, or C) the fixed disk on its edge? Your answer will be graded primarily on the reasoning you demonstrate for this question, not on correctness. Note: Writing the order with no reasoning will not get you any points. Free to spin

Explanation / Answer

moment of inertia does not depend upon orientation of spinning but depends upon distances of particles from axis.the purpose of this experiment is to prove law of conservation of angular momentum.

a)in first case and second case the particles are at the same distance and hence moment of inertia is same.

but in first case (I1w1-I2w2)=(I1+I2)w

b)In second case (I1w1+I2w2)=(I1+I2)W

c)In third case I1w1+I3w3=(I1+I3)w

here I1=mr2 /2 I2 =mr2  /2 I3 =mr2 /4

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