University:
University of Greenwich
Course:
BSC152 | Engineering Physics
Academic year:

2021
Views:

314

Pages:

5
Author:

Jesly V

* Uniform Circular Motion of a particle moves along a anular path with a constant speed then its motion is said to be • Uniform motion. uniform circulas motion circular motion motion is accelerated The velocity of an objecte in uniform circular motion changes continously due to the continuou change in its direction Angular displacement vector The angle is a güven As - Radian. $1 Unit set out by the radius time interval st. A AS B Angular Velocity (w) The time rate of change of angular displacement of a particle is is called ib co angular velocity. is oo is the angular displacement of the particle. is time ot, average angular velocity no. 28 00 instantaneous angular velocity. 3 do at Time period (1) The time taken by one by a particle particle to complete volution along ito called of time period. T is used to its circular path $1 unit second(s reformed time period. Frequency (7) The motuon frequency of an defined as object in circular the number of revolution completed per unit time. Relation between terme pened and frequency, Pernod T= • Relation between w, and T when a particle completes one revolution the time taken by the particle is equal to time period ie Angular displacement covered Angul ar velocity = w = c. e, t Relation between linear velocity and angular velocity. consider a particle moving along a circul a path of radcir from A to B circular 1. Suppose the particle turie ot covering. Page No. Date AB. Os along os asc Angular displacement of the particle e's sides by Is dividing both r تاه Then, taking the lim on both sides. lim = AS ΔΕ Ato do dt w ds dt V = V In vector form, V Angular Acceleration (a) The velocity of an earthelchange of angulaan of a acceleration. is called angular Average angular acc. (2) Instantaneous angular acceleration, Relation between linear acceleration (a) and angular acceleration (a) We have chear acceleration V = RW adv At since a = d (rw) a = n. dw In vector form,