3.1. Steps for Locating ICs

Try these first

1. 1.

   What is the definition of an Instantaneous Center (IC)?

   Hint

   Focus on the purpose of the IC in simplifying motion analysis.

2. 2.

   State Kennedy's theorem in your own words.

   Hint

   Think about how the links relate to each other.

3. 3.

   What does the Instantaneous Center represent?

   • A point of rest
   • A point of rotational motion
   • A point of linear motion

   Hint

   Think about the definition of IC.

4. 4.

   True or False: Kennedy's theorem is applicable only to linear motion.

   • True
   • False

   Hint

   Recall the applications of Kennedy's theorem.

5. 5.

   Given a three-link planar mechanism, find all the ICs and calculate the velocity of one point on the system when the angular velocity is 2 rad/s.

   Hint

   Draw sketches for each link connection and clearly label the distances.

6. 6.

   Consider a system where the angular velocity of one link is altered. How would this change affect the velocities of other points, identified through IC? Analyze and provide a detailed explanation.

   Hint

   Focus on how changes in one link’s motion influence the others through the IC.