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An airplane propeller rotates 1000 times per min. Find the number of degrees that a point on the edge of the propeller will rotate in 1 sec.

Guest Sep 1, 2014

Best Answer 

 #1
avatar+92751 
+5

$$\frac{1000rotations }{1min}\\\\
=\frac{1000rotations }{60seconds}\\\\
=\frac{50rotations }{3seconds}\\\\
\mbox{Now use the units to help you}\\\\
\frac{360degrees}{rotation}\times \frac{50 rotations}{3 seconds}\\\\
=\mbox{The rotations cancel out leaving you with }\\\\
=\frac{360*50}{3}degrees/second\\\\
=120*50\;degrees/second\\\\
=6000\;degrees/second\\\\$$

Melody  Sep 2, 2014
 #1
avatar+92751 
+5
Best Answer

$$\frac{1000rotations }{1min}\\\\
=\frac{1000rotations }{60seconds}\\\\
=\frac{50rotations }{3seconds}\\\\
\mbox{Now use the units to help you}\\\\
\frac{360degrees}{rotation}\times \frac{50 rotations}{3 seconds}\\\\
=\mbox{The rotations cancel out leaving you with }\\\\
=\frac{360*50}{3}degrees/second\\\\
=120*50\;degrees/second\\\\
=6000\;degrees/second\\\\$$

Melody  Sep 2, 2014

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