The system shown is initially at rest when the bent bar starts to rotate about the vertical axis AB with constant angular acceleration α0 = 3 rad/s2. The coefficient of static friction between the collar of mass m = 2 kg and the bent bar is μs = 0.35, and the collar is initially d = 70 cm from the spin axis AB.
Assuming the motion starts at t = 0, determine the time at which the collar starts to slip relative to the bent bar.
Figure P3.64
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