Part A Express your answer using two significant figures. rev A diver comes off

Question

Part A

Express your answer using two significant figures.

rev

A diver comes off a board with arms straight up and legs straight down, giving her a moment of inertia about her rotation axis of 18kg?m 2   . She then tucks into a small ball, decreasing this moment of inertia to 3.6kg?m 2   . While tucked, she makes two complete revolutions in 1.3s .

Part A

If she hadn't tucked at all, how many revolutions would she have made in the 1.8s from board to water?

Express your answer using two significant figures.

rev

Explanation / Answer

The earlier solution is correct but the arithmetic is wrong ...
... the correct answer is 0.53 rev ( not 0.27 ) ...
Initial moment of inertia

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