A wheel weighing 5kg and radius of gyration about an axis is 0.2m. What is its moment
of inertia? In order to produce angular acceleration of 2rad/s in the wheel. What
magnitude of torque is to be applied?
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Given,
M = 5 kg
K = 0.2 m
α = 2 rad s^(-2)
Then, moment of inertia,
I = MK²
I = 5 (0.2)²
I = 0.2 kg m²
And, torque,
τ = Iα
τ = 0.2 × 2
τ = 0.4 N m
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