Step-by-step explanation:
For the first question, the normal strain developed in each wire is given by the following equation:
Strain = (Displacement/Original Length) x 100
Therefore, the strain in each wire is:
Strain = (2mm/2r0) x 100 = 100 mm/r0
For the second question, the average developed in the rubber band is given by the following equation:
Strain = (Change in Length/Original Length) x 100
Therefore, the average normal strain in the rubber band is:
Strain = (Change in Length/2r0) x 100
Where Change in Length is the difference between the length of the rubber band after it is forced into the frustum of the cone and the original length of the rubber band.