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The rotational kinetic energy of a disc is 450 J and its moment of inertia is 100 kg m^2. What is its angular momentum ? |
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Answer» Solution :Rotational `K.E = K = 450 J` Moment of INTERTIA `=I = 100 kg m^(2)` ANGULAR momentum = L = ? `L^(2) = 2I xx 1/2 IOMEGA^(2) = 2IK`. `L = sqrt(2lK) = sqrt(2 xx 100 xx 450) = 300 kg m^(2) s^(-1)` |
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