7) A cockroach rides the rim of a rotating merry-go-round. If the angular speed of this system (merry-go-round + cockroach) is constant, does the cockroach have (a) radial acceleration and (b) tangential acceleration? If w is decreasing, does the cockroach have (c) radial acceleration and (d) tangential acceleration? 8) The figure shows three small spheres that rotate about a vertical axis. The perpendicular distance between the axis and the center of each sphere is given. Rank the three spheres according to their rotational inertia about that axis, greatest first. 1m 36 kg 2m Rotation axis -9 kg 3 m
7) A cockroach rides the rim of a rotating merry-go-round. If the angular speed of this system (merry-go-round + cockroach) is constant, does the cockroach have (a) radial acceleration and (b) tangential acceleration? If w is decreasing, does the cockroach have (c) radial acceleration and (d) tangential acceleration? 8) The figure shows three small spheres that rotate about a vertical axis. The perpendicular distance between the axis and the center of each sphere is given. Rank the three spheres according to their rotational inertia about that axis, greatest first. 1m 36 kg 2m Rotation axis -9 kg 3 m
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