Homework Help: math(trig)

Posted by confused on Monday, December 6, 2010 at 8:30pm.

1) What's the linear velocity of a point on the tip of a 6-ft propeller turning at 1200 revolutions per min?

2) A gear is driven by a chain that travels 90m/min. Find the radius of the gear if it makes 50 revolutions per minute.

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