Awheel rotates with a constant angular acceleration of  rad/s2. during a certain time interval its angular displacement is  rad. at the end of the interval its angular velocity is 2 rad/s. its angular velocity at the beginning of the interval is:

The angular velocity at the beginning of the interval is .

Explanation:

Given that,

Angular acceleration

Angular displacement

Angular velocity

We need to calculate the angular velocity at the beginning

Using formula of angular velocity

Where, = angular acceleration

= angular velocity

Put the value into the formula

Hence, The angular velocity at the beginning of the interval is .

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