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6 October, 23:08

Gear A has 30 teeth & Gear B has 20 teeth. If Gear A rotates at 1000rpm, what speed does Gear B rotate at?

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  1. 7 October, 00:57
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    The speed that gear B rotates at is 1500 rpm

    Explanation:

    Number of teeth on gear A = 30

    Number of teeth on gear B = 20

    Therefore, one complete revolution of gear A will go round 30 teeth while one revolution of gear B is equivalent to 20 teeth

    Hence, we have 1000 revolution will go round = 30 * 1000 = 30000 teeth

    For gear B, therefore, we have 30000 teeth will give; 30000/20 = 1500 revolutions

    Hence the speed that gear B rotates at = 1500 revolutions per minute.
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