A string is wound tightly around a fixed pulley whose radius is ...

[berenicecastro]

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

[stano32]

Answer to Question 1

A

Answer to Question 2

C

[berenicecastro]

Excellent

[rachel]

Gracias!