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A `25kg` uniform solid with a `20cm` radius respectively by a verticle wire such then the point suspended is velocity about the center of the sphere torque of `0.10`rad and then montain the sphere then at angle of `1.0` rod minimum the statement if sphere is then roleased its period of the oscillation will beA. `pi` secondB. `sqrt(2) pi` secondC. `2 pi` secondD. `4 pi` second |
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Answer» Correct Answer - D `tau = -k theta` `0.1 = - k (1. 0)`, where k is torsional constant of the wire `k = (1)/(10) T = 2 pi sqrt((1)/(k)) = 2pi sqrt(((2)/(5) xx 25xx (2)^(2))/(1 //10))` `= 2pi sqrt(10 xx 2 xx 2 xx 10) = 4 pi` second |
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