## 15 February 2017

### Difference between kinematics and dynamics

Kinematics and dynamics are two branches of mechanics that deal with the motion of a particle that plays an important role in robotics and mechanical engineering field.

What is kinematics?

A study that describes the motion of bodies and the system of bodies without taking into consideration of the cause of motion.

What is the dynamics?

A study of the motion of a particle along with their cause like force and torque.

Now let us have a deep insight into the comparison between them and check some difference between kinematics and dynamics.

Key difference :

Kinematics will give you the values of change whereas dynamics provide the reasoning behind it.

Kinematics :
• Kinematics originates from the Greek word kinesis, meaning motion.
• Galileo worked on with his numerous experiments measuring displacement, velocity and acceleration of balls rolling down inclined planes.
• More concern with the movement in general.
• A description of how objects move.
• kinematics describes movement, acceleration, speed, of objects.
• Kinematics is based on the nature of force, nature of the body.
• Kinematics is the geometry of motion.
• Motion is teated geometrically without reference to things like cause and effects.
Dynamics :
• Dynamics from the Greek word dunamis which means power.
• Newton worked on when he formulated his three laws.
• Concern about measuring the causes and quantity of it and how it contributes and relates to the movement.
• It deals with force and why objects move as they do.
• Dynamics describes forces applied to the objects.
• Dynamics is based on the concept of force.
• Dynamics is geometry + physics of motion.
• Motion is treated in terms of trajectories and time so force and motion come in.