Question

A particle moves in circular path with uniform speed v. The change in its velocity on rotating through 60

Answer 1

Speed is a uniform , and speed is a scaler , so irrespective of the direction it is same . Hence speed change = 0

Velocity is a vector so we have to follow parallelogram law or triangle law of vectors , and this is the triangle law to show direction and parallelogram law for numerical value.

Hope you got it , sayonara

Answer 2

Dear Student,

◆ Answer -

∆v = v

● Explanation -

Change in velocity of particle is given by -

∆v = √(v1^2 - 2v1.v2.cosx + v2^2)

∆v = √(v^2 - 2v.v.cos60 + v^2)

∆v = √(v^2 - v^2 × 0.5 + v^2)

∆v = √(v^2)

∆v = v

Hence, the change in velocity of the particle is v.

Thanks dear. Hope this helps you...