PhysCasts: Stopping a Rotating Satellite

Rowlands, W. (Wayne)


This PhysCast will apply Newton's second law of motion in its rotational form. A cylindrical satellite is 1.4 m in diameter with its 940 kg mass distributed uniformly. The satellite is spinning at 10 rpm but must be stopped for repairs. Two rockets provide 20 N of thrust each and are mounted on opposite sides to fire tangentially. How long must they be fired to stop the rotation?

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Swinburne Commons

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