Systems and methods are provided for passively dissipating a rotational speed of a fluid-driven rotatable shaft. In particular, a dissipation member is provided for dissipating the rotational speed of a shaft having an end effector formed thereon. As the rotational speed of the shaft increases, the dissipation member will apply a counter-torque to the shaft, thereby limiting the rotational speed of the shaft. In an exemplary embodiment, the counter-torque has a non-linear dependence on the rotational speed of the shaft, such that the counter-torque increases at a rate greater than a rate of increase in the rotational speed. Thus, when the end effector of the rotatable shaft is placed in contact with tissue and the operational speed of the shaft is reduced, the dissipation member will apply a minimal or low counter-torque to the rotatable shaft. When the end effector of the rotatable shaft is removed from the tissue and the operational speed of the shaft increases, the counter-torque applied by the dissipation member will increase thereby limiting the operational speed of the shaft.