Dynamics

 

What is dynamics?

 

What is dynamics?

 

The study of things that are stationary.
The study of things that are moving.
The study of things that are experiencing load.

 

 

 

Why should we study dynamics?

 

Because almost everything moves.
Because we need to know how forces deform solids.
Because we need to know the heat generated by moving bodies.

 

 

 

What will we learn?

 

We will learn

 

• how to classify bodies as being particles or rigid bodies and
• kinematic and kinetic methods of dynamic analysis.

 

What is the difference between a particle and a rigid body model?

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A particle has mass but no size.
A particle has mass and size.
A rigid body has mass but no size.
A rigid body has mass and size.

 

 

 

 

What is the difference between kinematic and kinetic analysis?

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Kinematic analysis studies how forces relate to motion.
Kinematic analysis studies geometric and time aspects of motion. There is no reference to the force causing the motion.
Kinetic analysis studies how forces relate to motion.
Kinetic analysis studies geometric and time aspects of motion. There is no reference to the force causing the motion.

 

 

 

 

Prerequisite knowledge

 

You will need to know

 

• Physics
• Vectors
• General concepts of motion
• Statics
• Equations of equilibrium
• Free-body diagrams
• Calculus
• Time rate of change
• Differential calculus
• Integral calculus