An astronaut in the space station initially has no angular momentum. He begins w

Question

An astronaut in the space station initially has no angular momentum. He begins whirling his arms his around in a counterclockwise direction as seen from one side. If his whirling arms have a total angular momentum 10.7 kg·m²/s, and he weighs 80.0 kg, what is the angular momentum of the rest of his body while his arms whirl? ________ clockwise or counter clockwise?

Assume there is no air resistance or contact with any other object while the astronaut whirls his arms. When he stops whirling his arms, (multiple choice)

A.) his body rotates faster in the same direction.

B.) continues to rotate in the same direction at the same speed.

C.) also stops rotating. reverses direction of rotation.

D.) may or may not rotate depending on various factors.

Explanation / Answer

B. continues to rotate in the same direction at the same speed. because there is no accelration due to gravity total body moves with same velocity in the same direction

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