Define the term angular velocity

      

Define the term angular velocity

  

Answers


John
Angular velocity is the rate of change of angular displacement with time.
If a body moving in a circular path turns through an angle ${\theta}$ radians in time ‘t’, we define angular velocity omega (${\omega}$), as the rate of change of the angle ${\theta}$ with time. ${\omega}$= ${\theta}$ / t, unit for angular velocity is radians per second (rads-1). Since the radian measure is a ratio we can write it as second-1 (s-1). We can establish the relationship between angular velocity ‘${\omega}$’ and linear velocity ‘v’, from the relation, ${\theta}$ = arc / radius, arc = radius × ${\theta}$. Dividing the expression by ‘t’, then arc / t = radius, but arc / t = v (angular velocity). So ‘v’ = radius × ${\omega}$. This expression gives us the relationship between angular and linear velocity.
johnmulu answered the question on February 18, 2017 at 09:22


Next: A body mass 0.50 kg is attached to the end of a string of length 50 cm and Whirled in a horizontal circle. If the tension in the string is 81N, Determine the velocity of the body.
Previous: State two ways in which the centripetal force on a body can be increased.

View More Physics Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions