Question

a particle is moving in a circular track of radius 2 m with a constant angular speed of 3 rad/s . the magnitude of its linear speed is ?
options
1. 2 m/s
2. 3m/s
3. 6m/s
4. 8m/s​

Answer 1

Answer:

Net acceleration is the resultant acceleration of centripetal acceleration and tangential acceleration thus find both of them as follows:

Ac− be centripetal acceleration.

At− be tangential acceleration 

Anet=(Ac2+At2)

Now then,

Ac is RV2=1025=2.5m/s2

At is given as 2.m/s2, thus 

Anet=(2.52+22)

         =3.20m/s2.

Hence,

option (A) is correct answer