Identical particles are placed at the 50-cm and 80-cm marks on a ...

[pepyto]

Identical particles are placed at the 50-cm and 80-cm marks on a meter stick of negligible mass. This rigid body is then mounted so as to rotate freely about a pivot at the 0-cm mark on the meter stick. If this body is released from rest in a horizontal position, what is the angular speed of the meter stick as it swings through its lowest position?
 a. 4.2 rad/s
  b. 5.4 rad/s
  c. 4.6 rad/s
  d. 5.0 rad/s
  e. 1.7 rad/s

Question 2

A uniform rod (length = 2.0 m) is mounted to rotate freely about a horizontal axis that is perpendicular to the rod and that passes through the rod at a point 0.50 m from one end of the rod. If the rod is released from rest in a horizontal position, what is the angular speed of the rod as it rotates through its lowest position?
 a. 3.5 rad/s
  b. 3.8 rad/s
  c. 4.1 rad/s
  d. 2.0 rad/s
  e. 5.6 rad/s

[bitingbit]

Answer to Question 1

B

Answer to Question 2

C

[pepyto]

Thank you!

[bitingbit]

Always glad to help...