MOTIONHAFSAH

KHAN7A

Motion is change of location or position of an object with respect to time.

Change in motion is the result of an applied force.

Motion is typically described in terms of velocity also seen as speed, acceleration, displacement, and time.

WHAT IS MOTION?

The motion of an object is said to be translatory if the position of the object is changing with respect to a fixed point or object. All the particles of a body performing translatory motion move in the same direction traversing parallel paths.

Rectilinear Motion: In rectilinear motion the body moves in a straight line.Example: Drawer of a table.Curvilinear Motion: In curvilinear motion the object moves along

a curved line.Example: Cable car moves in a curve.

TRANSLATORY MOTION

Rotation of a body or body part about a fixed point or line in space (the axis of rotation) so that all parts of the body travel through the same angle, in the same direction, in the same time. The axis of rotation maybe internal or external. But it may not pass through itself.

Example: Connected rotating gears. The washing machine’s spin

dryer.

ROTATORY MOTION

Oscillatory motion is that in which a body moves to and fro about its mean position. A back-and-forth recurring movement.

Example: That swing in the children's park, when it is pushed by you it starts swinging. It has a damped motion due to friction of moving arts and air. Vibratory MotionIf the oscillatory motion is very fast, then

it is called vibratory motion Example: The moving of the wings of bees.

OSCILLATORY MOTION

A vibrating object moves over the same path over the course of time. Its motion repeats itself over and over again. If it were not for damping, the vibrations would endure forever or at least until someone catches the mass and brings it to rest.

Example: 1. rocking chair 2.a bouncing ball

PERIODIC MOTION