Question

what is the torsional constant of wire, when TP= 0.2s ?​

Answer 1

Answer:

If the torsional constant of the wire is k, then T = 2(I/k)

If one more disc is placed on top of the first disc, then the mass of the system increases and the new moment of inertia will be I²

=I+0.2 , I is the moment of inertia of the second disc ]

T_2/T_1 = [(I + 0.2)/0.2] . Substituting the values , we get I=0.11kg−m²