Transverse acoustic spin and torque from pure spinning of objects

Acoustic spin has been recently explored for many applications. In particular, transverse acoustic was demonstrated inhomogeneous fields. this Letter, we show the emergence of and torque in rotating objects same physical properties as surrounding, to single out effects purely due rotation. The spinning a cylindrical column air or water medium possesses intrinsic angular momentum, study force it experiences evanescent resulting discontinuity can thus scatter sound unusual ways, including negative radiation force, although no imaginary part its parameters.