Author Question: A string is wound tightly around a fixed pulley whose radius is 5.0 cm. As the string is pulled, the ... (Read 450 times)

berenicecastro · **on:** Jul 29, 2018

A string is wound tightly around a fixed pulley whose radius is 5.0 cm. As the string is pulled, the pulley rotates without slipping. What is the angular speed of the pulley when the string has a linear speed of 5.0 m/s?

A) 100 rad/s
B) 50 rad/s
C) 25 rad/s
D) 20 rad/s
E) 10 rad/s

Question 2

Earth's radius is 6.38 106 m, and it completes one revolution every day. What is the magnitude of the centripetal acceleration of a person standing on the equator?

A) 0.00844 m/s2
B) 0.00343 m/s2
C) 0.0337 m/s2
D) 0.343 m/s2
E) 0.000854 m/s2