VELOCITY , ACCELERATION DIAGRAMS

1. UNIT-2
KINEMATICS OF LINKAGE
MECHANISM

2. Distance and Displacement
• The length of the actual path travelled by a body is called
the distance travelled by the body. It is a scalar quantity.
• The shortest distance from the initial position to the final
position of a body is called displacement of the body. It is a
vector quantity.

3. Instantaneous Centre of Rotation

4. Instantaneous Centre of Rotation

5. Velocity of a point on a link by
Instantaneous Centre Method
For point A we know Magnitude and Velocity
For point B we know Velocity only
By drawing perpendicular lines from A & B we can
Get intersection for instantaneous Centre I

6. Velocity of a point on a link by Instantaneous Centre
Method

7. Number of Instantaneous Centers in a Mechanism

8. Types of Instantaneous Centers

9. ANGULAR VELOCITY RATIO THEOREM

10. Significance of co-incident point
• When a coincident point exist in a mechanism, to
find the total acceleration at that point – we have
to calculate one more acceleration component
which is known as coriolis component

11. • So ,
Total acceleration at a coincident point about
another point in a link is the vector sum of their
radial acceleration, tangential acceleration and the
coriolis acceleration.
Significance of co-incident point

12. Coriolis component of
Acceleration

13. Example

14. Magnitude of coriolis
component of
acceleration

15. KINEMATIC SYNTHESIS

16. STAGES OF KINEMATIC SYNTHESIS

17. Types of synthesis Problems
(Tasks of kinematic synthesis)