The circular blade of a table saw is 50 cm in diameter and spins at 50 rpm. How long must it rotate so that a point at its rim covers exactly 1 km? Select one:
a. 27.84 min
b. 12.73 min
c. None of the given choices.
d. 19.79 min
e. 35.87 min

A CD rotates at 5600 revolutions per minutes. The disk has a radius of 15 cm. What is the centripetal acceleration of a point 5 cm from the center axle?

Select one:
a. 858 m/s2
b. 17,169 m/s2
c. 29.3 m/s2
d. 586 m/s2

The blade of a modern wind turbine is usually around 55 m long (radius = 27.5 m). If the blade rotate at 11.29 revolutions per minute, what is the approximate centripetal acceleration (in meters per second squared) t the edge of the blade?

Select one:
a. 27.5 m/s2
b. 1.18 m/s2
c. 32.49 m/s2
d. 38.4 m/s2