A body of mass m = 10 kg is attached to one end of a wire of length 0.3 m. The maximum angular speed (in rad s⁻¹) with which it can be rotated about its other end in space station is (Breaking stress of wire = 4.8 × 10⁷ Nm⁻² and area of cross-section of the wire = 10⁻² cm²) is _____