Angular Acceleration and Observer Perspective
A rod, pivoted at one end, rotates in the xy-plane. An observer on the negative z-axis measures a counterclockwise angular acceleration of α = 3 rad/s². If the rod begins its motion from rest, how would an observer on the positive z-axis describe the motion?
A
Initially at rest, then clockwise rotation with α = -3 rad/s²
B
Initially at rest, then counterclockwise with α = 3 rad/s²
C
Initially at rest, then clockwise rotation with α = 3 rad/s²
D
Initially at rest, then counterclockwise with α = -3 rad/s²
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