Question

a particle is moving along a circular path of radius 2m with uniform speed of 5 m/s.what will be the change in velocity when the particle completes half the revolution?
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Answer 1

Answer:

a particle is moving along a circular path of radius 2m with uniform speed of 5 m/s.what will be the change in velocity when the particle completes half the revolution?

Answer 2

Answer:

Velocity of particle =-5 m/s

Explanation:

We are given that a particle is moving along a circular path of radius with uniform speed 5 m/s

We have to find the change in velocity when the particle completes half of revolution

Velocity is defined as the displacement covered by particle per unit time .

Radius of circular path =2 m

Distance covered by the particle=$2\pi r=2\times \pi\times 2=4\pi m$

Speed=$\frac{distance }{times}$

Time taken by the particle =$5\times 4\pi=20\pi$ sec

When a particle completes its half revolution

Then the the particle moves in opposite direction

It means particle rotates by 180 degrees in opposite direction

It means the direction of velocity vector changes

The velocity of particle after half revolution =-5 m/s