Question

A particle in moving in a circular path of radius 7m with speed.it completes one revolution in 4sec .find the speed of the particle?​

Answer 1

Given

Radius of circular path = 7 m.

Completion of 1 revolution time = 4 s.

To find

Speed of particle

Solution

Here, total distance will be calculated as circumference of circular path.

We know that,

⇒ Circumference of circle = 2πr

⇒ Circumference = 2 × 22/7 × 7

⇒ Circumference = 2 × 22

⇒ Circumference = 44 m

Now we know that,

⇒ Speed = Distance/Time

⇒ Speed = 44 m/4s

⇒ Speed = 11 m/s

Therefore,

Speed of particle = 11 m/s.