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Mechanical Engineering QUESTION #2523
Question 1
The instantaneous center (IC) of zero velocity for a rigid body in planar motion is the point at which:
  • Velocity is maximum
  • Acceleration is zero
  • The body has zero instantaneous velocity — every other point's velocity is perpendicular to the line joining it to the IC✔️
  • Angular velocity is zero
Correct Answer Explanation
The instantaneous center of zero velocity is a point where the velocity is zero at that instant. Every point on the body moves perpendicular to its line connecting to the IC, with speed proportional to its distance: \(v_P=\omega\cdot r_{P/IC}\).