Medals shall be rewarded. Thanks for the help
(Trigonometry question)

Two pulleys, 50cm and 30cm in diameter, respectively, are connected by a belt, the larger pulley makes 12 revolutions per minute. Find the angular speed of the smaller pulley in rad/sec.

Question

Medals shall be rewarded. Thanks for the help
(Trigonometry question)

Two pulleys, 50cm and 30cm in diameter, respectively, are connected by a belt, the larger pulley makes 12 revolutions per minute. Find the angular speed of the smaller pulley in rad/sec.

whpalmer4 · Answer

Angular speed of the large pulley is 12 rev/min * 1 min/60 seconds * 2 pi radians/revolution = $\frac{2}{5}\pi$ rad/sec

The smaller pulley will turn faster, inversely proportional to the ratio of circumference of each pulley.

anonymous · Answer

Thank you very much whpalmer4.