Angular Displacement with detail in physics

 Angular Displacement :

 When a body moves in a circular path and cover some circumference (distance) is called

angular displacement. S = r

 Its SI unit is degree and “radian”. = s/r = L/L = dimensionless.

 It is vector quantity.

 It is axial vector. Its direction is along the axis.

 Use Right Hand rule,

 Clockwise the angular displacement is inward (negative).

 Anticlockwise Angular displacement is outward (Positive).

1 degree ° is equal to 0.0174 radian.

1 radian is equal to 57.3°.

Radian: The length (s) of an arc (of a circle path) is directly proportional to the radius ( r )

of the circle and angle subtended (Muqabil hona ) (to , where the length is exactly equal to

the radius of the circle.

 It is denoted by theta .