We propose two new kinds of tests for equivalence principle and special relativity by using rotating extended bodies. The first test is based on the massvelocity relation in special relativity and the equivalence principle. The second test depends upon the spin-coupling between the rotating bodies. These tests could be done in a rotating torsion balance experiment or a free-fall experiment by c...

On the basis of Lagrangian formalism of relativistic field theory post-Newtonian equations of motion for a rotating body are derived in the frame of Feynman’s quantum field gravity theory (FGT) and compared with corresponding geodesic equations in general relativity (GR). It is shown that in FGT the trajectory of a rotating test body does not depend on a choice of a coordinate system. The equat...

Slender fibres are ubiquitous in biology, physics and engineering, with prominent examples including bacterial flagella cytoskeletal fibres. In this setting, slender body theories (SBTs), which give the resistance on fibre asymptotically its slenderness $\epsilon$ , useful tools for both analysis computations. However, a difficulty arises when accounting twist cross-sectional rotation: because ...

To date, research on the disturbed experience of body size in Anorexia Nervosa (AN) mainly focused on the conscious perceptual level (i.e. body image). Here we investigated whether these disturbances extend to body schema: an unconscious, action-related representation of the body. AN patients (n = 19) and healthy controls (HC; n = 20) were compared on body-scaled action. Participants walked thr...

In the present paper, time dependent creep behavior of hollow circular rotating cylinders made of exponentially graded material (EGM) is investigated. Loading is composed of an internal pressure, a distributed temperature field due to steady state heat conduction with convective boundary condition and a centrifugal body force. All the material properties are assumed to be exponentially graded a...

The helicity modification of light polarization which is induced by the gravitational deflection from a classical heavy rotating body, like a star or a planet, is considered. The expression of the helicity asymmetry is derived; this asymmetry signals the gravitationally induced spin transfer from the rotating body to the scattered photons. E-Mail: [email protected]

The drag on an axisymmetric body rising through a rotating fluid of small viscosity rotating about a vertical axis is calculated on the assumption that there is a Taylor column ahead of and behind the body, in which the geostrophic flow is determined by compatibility conditions on the Ekman boundary-layers on the body and the end surfaces. It is assumed that inertia effects may be neglected. Es...

In this paper we consider the problem of optimal control of the model for a rotating body beam with a quadric cost function. We prove that there exists at least one optimal control and give necessary conditions for the control. Furthermore, we consider the problem of obstacle and prove the existence of optimal obstacle.

The velocity of a moving point in a general path is the vector quantity, which has both magnitude and direction. The magnitude or the direction of the velocity vector can change over time as a result of acceleration that the time rate of velocity changes. Acceleration analysis is important because inertial forces and inertial torques are proportional to rectilinear and angular accelerations acc...