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Multiple Choice
A 4 m long blade initially at rest begins to spin with 3 rad/s2 around its axis, which is located at the middle of the blade. It accelerates for 10 s. Find the tangential speed of a point at the tip of the blade 10 s after it starts rotating.
A
0 m/s
B
15 m/s
C
30 m/s
D
60 m/s
E
188 m/s
11:1m
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