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Pulleys Two pulleys, one with radius \( 4 \) inche...

Pulleys Two pulleys, one with radius \( 4 \) inches and one with radius \( 9 \) inches, are connected by a belt. (See the figure.) If the \( 4 \) -inch pulley is caused to rotate at \( 5 \) revolutions per minute, determine the revolutions per minute of the 

\( 9 \) -inch pulley. [Hint: The linear speeds of the pulleys are the same; both equal the speed of the belt.] 


x = 11.25 revolution per min 

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