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A pulley of radius 10 cm turns at 6 revolutions per second. What is the linear velocity of the belt driving the pulley in meters per second?
possible answers:
A. 376.99 m/s
B. 1.67 m/s
C. 166.67 m/s
D. 3.77 m/s

Respuesta :

taskmasters

This problem is on the circular motion.

Assuming a basis of 1 sec, there would be 6 revolutions, which is equivalent to 6 circumference of the pulley. One revolution means one circumference, which is 2(pi)(10cm) or 20(pi) cm.

Therefore, linear speed is 6(20)(pi) cm/s or 376.99 cm/s or 3.77 m/s

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