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Angular velocity just means how fast it's rotating.

If youaa want more angular velocity, just rotate it faster or decrease the radius (move it closer to the center of rotation).

Just like force = rate of change of momentum, you have torque= rate of change of angular moment

Or

We can increase the angular velocity of a rotating particle by applying a tangential force(i.e. accelaration) on the particle.

Since the velocity of the particle is tangential with the circle along which it is moving, the tangential accelaration will not change the diriction of the velocity(as angle is 0),but will cause a change in magnitude. Thus angular velocity will increase.

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