Question

A potter's wheel of radius 11 cm starts from rest and rotates with constant angular accel- eration until at the end of 35 s it is moving with angular velocity of 19 rad/s. What is the angular acceleration? Answer in units of rad/s2.

Answer 1

angular acceleration = 0.54 rad/s/s

Step-by-step explanation:

Initial angular speed of the wheel is ZERO as it starts from rest

final angular speed is given as

`\omega_f = 19 rad/s`

`\Delta t = 35 s`

now we know that angular acceleration is rate of change in angular speed

`\alpha = (\Delta \omega)/(\Delta t)`

here we have

`\alpha = (19 - 0)/(35)`

`\alpha = 0.54 rad/s^2`