Particles (Mass of Each = 0

question 28

Multiple Choice

Particles (mass of each = 0.20 kg) are placed at the 40-cm and 100-cm marks of a metre stick of negligible mass. This rigid body is free to rotate about a frictionless pivot at the 0-cm end. The body is released from rest in the horizontal position. What is the initial angular acceleration of the body?

• A)12 rad/s2
• B)5.9 rad/s2
• C)8.4 rad/s2
• D)5.4 rad/s2
• E)17 rad/s2

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