In Order to Train for a High-G Environment,an Astronaut Is

question 98

Multiple Choice

In order to train for a high-g environment,an astronaut is placed in a centrifuge of radius several meters and rotated in a horizontal circle at constant speed.In this situation,in which direction is the net force on the astronaut?

• A)The net force is down since gravity cannot be turned off.
• B)The net force is horizontal toward the center of the circle.
• C)The net force is between horizontal toward the center of the circle and straight up,the angle depending on the speed and the radius involved.
• D)The net force is zero since the astronaut is moving at constant speed and thus the force has no direction.

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