As there is no absolute frame of reference, absolute motion cannot be determined. Thus, everything in the universe can be considered to be moving (wikipedia).
In previous chapter, we have studied motion in terms of their position, velocity and acceleration. Variation of these quantities with time is called Kinematics.
In this chapter, we will discuss the cause of Motion due to the force (i.e. force acting in moving objects). This aspect of motion is called Dynamics.
In Physics, Motion is a change in position of an object over time. Motion of a body is observed by attaching a frame of reference to an observer and measuring the change in position of the body relative to that frame (wikipedia). If the position of a body is not changing with respect to a given frame of reference, the body is said to be rest (motionless).
Motion is a very common experience in our daily life. For Example: walking of people, flow of water, flying of aeroplane, running of bus etc. In physics, Motion of all large scale (i.e. Projectiles, Cells, Humans, Planets, Universe) are described by Classical Mechanics, where as motion of very small scale (i.e. atomic and subatomic objects) are described by Quantum Mechanics
Types of Motions:
- Simple Harmonic Motion (Example: Pendulum), Anharmonic Motion, Periodic Motion, Circular Motion (Example: Moon and Earth), Linear Motion, Reciprocal Motion, Random Motion, Rotary Motion, Brownian Motion,Curvilinear Motion, Rotational Motion, Rolling Motion, Oscillation, Vibrational Motion, Projectile Motion, etc........
» Force and Inertia
» Newton's Laws of Motion
» Linear Momentum and Conservation laws
» Impulse of force
» Solid friction
» Application of Newton's Laws.
Return to Main Menu