Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 7 - Section 7.4 - Inverse Variation - Exercises - Page 287: 1

Answer

$36\ rpm$

Work Step by Step

The relationship of two rotating pulleys connected by a belt is: (diameter of A)(rpm of A) = (diameter of B)(rpm of B). Now we have $$ 25 \times72=50\times x \Longrightarrow x=\frac{25 \times72}{50}=36\ rpm .$$
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