A particle moving along a circular path of radius r and uniform speed v Through what angle does it's - Physics - Motion In A Plane

Question

A particle moving along a circular path of radius r and uniform
speed v Through what angle does it's angular velocity change when
it completes half revolution

Anshu Agrawal · Accepted Answer

Dear student,

The change in angle when the particle completes half revolution
with constant speed will be zero

When the particle completes half revolution, it reaches the
opposite end of its starting point The direction of angular
velocity is tangential, that is perpendicular to the radius
vector

So the angle of the velocity vector will be same in both the cases,
and so change in angle will be zero

Regards

A particle moving along a circular path of radius r and uniform speed v. Through what angle does it's angular velocity change when it completes half revolution