Chapter 17: Circular Motion

Circular Motion:

Degree and Radiant:

Degree:

1 complete circle = 360 degree = 1 minute

Thus, 1 minute = 360 degree

60 sec = 360 degree

1 sec = 6 degree

Radian:

1 radian: It is the angle subtended in the center of the circle by a radius that is equal to the Arc Length. 

2 * pie = 360 degree (1 full circle)

1 Pie = 180 degree

1 radiant = 180/pie degree

Angular Displacement: The angle theta by which the objects moves

Angle in Radian (theta) = Arc length (s) / radius (r)

Thus, Theta = s/r

Angular Velocity: It is  Denoted by Omega and calculated as:

Angular Velocity = Angular Displacement (Theta)  / Time (t)

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