To maximize the moment of inertia of a flywheel while minimizing its weight, what shape and distribution of mass should it have? Explain.
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Given a fixed amount of a material, what shape should you make a flywheel so it will store the most energy at a given angular speed?
Sri K.
In order to determine the mass moment of inertia of a flywheel of radius $600 \mathrm{mm}, \mathrm{a} 12$ -kg block is attached to a wire that is wrapped around the flywheel. The block is released and is observed to fall $3 \mathrm{m}$ in $4.6 \mathrm{s}$. To eliminate bearing friction from the computation, a second block of mass $24 \mathrm{kg}$ is used and is observed to fall $3 \mathrm{m}$ in $3.1 \mathrm{s}$. Assuming that the moment of the couple due to friction remains constant, determine the mass moment of inertia of the flywheel.
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What is meant by moment of inertia? Name the forces acting on the descending mass. Name the torques acting on the flywheel when the mass is descending. Do these torques remain constant during the fall of the mass? What happens to the potential energy lost by the falling mass? Describe a practical application of a flywheel.
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