Author Question: Particles (mass of each = 0.40 kg) are placed at the 60-cm and 100-cm marks of a meter stick of ... (Read 31 times)

torybrooks · **on:** Jul 28, 2018

Particles (mass of each = 0.40 kg) are placed at the 60-cm and 100-cm marks of a meter 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 magnitude of the initial linear acceleration of the end of the body opposite the pivot?
a. 15 m/s2
b. 9.8 m/s2
c. 5.8 m/s2
d. 12 m/s2
e. 4.7 m/s2

Question 2

Particles (mass of each = 0.20 kg) are placed at the 40-cm and 100-cm marks of a meter 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