A 0.40-kg mass, attached to the end of a 0.75-m string, is ...

[jhjkgdfhk]

A 0.40-kg mass, attached to the end of a 0.75-m string, is whirled around in a circular horizontal path. If the maximum tension that the string can withstand is 400 N, then what maximum speed can the mass have if the string is not to break?
 a. 370 m/s
  c. 19 m/s
  b. 27 m/s
  d. 29 m/s

Question 2

A ventilation fan has blades 0.50 m long rotating at 20 rpm. What is the centripetal acceleration of a point on the outer tip of a blade?
 a. 1.1 m/s2
  c. 0.55 m/s2
  b. 2.2 m/s2
  d. 3.3 m/s2

[coreycathey]

Answer to Question 1

B

Answer to Question 2

B