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Given a mass of 380 grams, and a rotational speed of 180 rpm, calculate the rotational kinetic energy for the following three shapes: a disk,

Given a mass of 380 grams, and a rotational speed of 180 rpm, calculate the rotational kinetic energy for the following three shapes: a disk, a hollow sphere, and a thin rod. Both, the disk and the sphere have a radius of 20 cm, and the length of the thin rod is 40 cm. Refer to Figure 10.12 Some rotational inertias in section 10.3 Dynamics of Rotational Motion: Rotational Inertia. Make a prediction: If the same mass is shaped as a hoop with a radius of 20 cm, would be the rotational kinetic energy greater, or smaller than the kinetic energies calculated for the other 3 shapes? Check your prediction - calculate the rotational kinetic energy for that shape, and compare your results. Was your answer consistent with your expectations? Post your calculations and your answers in your discussion post, using the D2L Math Editor if necessary. Conclude your post by saying what you learned from this exercise

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