Author Question: A uniform meter stick is pivoted to rotate about a horizontal axis through the 25-cm mark on the ... (Read 203 times)

piesebel · **on:** Jul 28, 2018

A uniform meter stick is pivoted to rotate about a horizontal axis through the 25-cm mark on the stick. The stick is released from rest in a horizontal position. The moment of inertia of a uniform rod about an axis perpendicular to the rod and through the center of mass of the rod is given by (1/12)ML2 . Determine the magnitude of the initial angular acceleration of the stick.
a. 17 rad/s2
b. 13 rad/s2
c. 15 rad/s2
d. 19 rad/s2
e. 23 rad/s2

Question 2

A uniform rod is 2.0 m long. The rod is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest at the horizontal position. What is the angular acceleration of the rod at the instant the rod makes an angle of 70 with the horizontal?
a. 3.7 rad/s2
b. 1.3 rad/s2
c. 2.5 rad/s2
d. 4.9 rad/s2
e. 1.9 rad/s2