Rolling friction is present in all nonconforming bodies in contact.A permanent topic is the characterization of Mattress Protectors the moment of rolling friction.A number of authors accept the hypothesis of linear dependency between the rolling torque and the normal force while other researchers disagree with this assumption.The present paper proposes a method for testing the hypothesis of linear relationship between rolling moment and normal pressing force.
A doubly supported cycloidal pendulum is sets used in two situations: symmetrically and asymmetrically supported, respectively.Under the hypothesis of a linear relationship, the motions of the pendulum should be identical.