TeenOlaflover
26.08.2019 •
Mathematics
Apulley 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
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Ответ:
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
Ответ: