A uniform rod (L=3.0m) and (M=1.0kg) is pivoted about a horizontal frictionless pin through one end. the rod is released from rest at an angle of 30 degrees below the horizontal. what is the angular speed of the rod when it passes through the vertical position? (the moment of the inertia of the rod about the pin is 3.0 kg*m2)

A. 1.4 rad/s
B. 2.2 rad/s
C. 2.5 rad/s
D. 2.7 rad/s
E. 3.2 rad/s

Question

A uniform rod (L=3.0m) and (M=1.0kg) is pivoted about a horizontal frictionless pin through one end. the rod is released from rest at an angle of 30 degrees below the horizontal. what is the angular speed of the rod when it passes through the vertical position? (the moment of the inertia of the rod about the pin is 3.0 kg*m2)

A. 1.4 rad/s
B. 2.2 rad/s
C. 2.5 rad/s
D. 2.7 rad/s
E. 3.2 rad/s

anonymous · Answer

can you specify that 30 degree angle is subtended with vertical of horizontal axis

anonymous · Answer

@mahesh.malviya6

its mentioned below the horizontal

anonymous · Answer

You can use the concept of energy conservation!

anonymous · Answer

ans is 2.23 rad/s...is it correct

anonymous · Answer

Thanks!

anonymous · Answer

your welcome...you can ask for explaination if you want.....

anonymous · Answer

i used energy conservation and integration to reach my answer...