Results 151 to 160 of about 3,468,054 (198)

Variable mass oscillator

American Journal of Physics, 2003
We studied the motion of a variable mass oscillator. The mass used is a container full of sand that loses sand at a constant rate and hangs from a spring. The spring was suspended from a force sensor connected to a data acquisition system that let us study the evolution of the system.
José Flores, Guillermo Solovey, Salvador Gil   +2 more
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Intraskeletal variability in bone mass

American Journal of Physical Anthropology, 2006
AbstractFor methodological or other reasons, a variety of skeletal elements are analyzed and subsequently used as a basis for describing general bone loss and mass. However, bone loss and mass may not be uniform within and among skeletal elements of the same individual because of biomechanical factors.
Joshua J, Peck, Sam D, Stout
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Concave variable-mass liner

PPPS-2001 Pulsed Power Plasma Science 2001. 28th IEEE International Conference on Plasma Science and 13th IEEE International Pulsed Power Conference. Digest of Papers (Cat. No.01CH37251), 2001
Summary form only given, as follows. Liner magnetic implosion experiments usually make use of liners having the shape of right circular cylinder. This paper considers the possibility of using axially symmetric liners of a more complex (concave) shape. As computations show, during concave liner implosion at an appropriate choice of initial curvature (in
A.M. Buyko, G.G. Ivanova, V.N. Mokhov, V.N. Sofronov, A.I. Startsev, V.B. Yakubov, L.V. Yakubova   +6 more
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Variable Mass Problems

1992
In Chapter 5, the term impulse was introduced. In this chapter, we renew our acquaintance with it via some revision of ideas. Perhaps the most rewarding way to think of an impulse is in terms of an external agent that alters momentum. Common such agents are baseball or cricket bats striking, and significantly changing, the momentum of a moving ball ...
Phil Dyke, Roger Whitworth
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Mass Transport in Porous Media With Variable Mass

2012
We present a theoretical and numerical study of mass transport in a porous medium saturated with a fluid and characterised by an evolving internal structure. The dynamics of the porous medium and the fluid as well as their reciprocal interactions are described at a coarse scale, so that the fundamental tools of Mixture Theory and Continuum Mechanics ...
GRILLO, ALFIO, GIVERSO, CHIARA, Favino M., Krause R., Lampe M., Wittum G.   +5 more
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Dynamics with variable masses

Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1980
Attention is drawn to the need for a dynamics of variable masses, and two examples are given.
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Global Invariants for Variable-Mass Systems

Physical Review Letters, 2006
We investigate the effect of mass loss on the invariants of single particle motion in potentials having translational or rotational symmetry. These systems are non-Hamiltonian in the physical momenta, but for non-velocity-dependent potentials can be made formally Hamiltonian by treating the velocities as canonical momenta. Applying Noether's theorem to
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Harmonic oscillator with variable mass

Journal of Physics A: Mathematical and General, 1983
A general treatment of the quantal harmonic oscillator with variable mass is given. Various examples additional to those obtained by Colegrave and Abdalla for which a closed form solution is possible are given.
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Climate Variability and Mass Migration

2000
We may look upon today’s economy as a huge mechanism. Multiple factors interlink like wheels of a clockwork. They all have an impact on the end result and through probability studies alone can the significance of one or the other factor be isolated. It is obvious and quite evident that the natural environment on earth affects the development of human ...
Nico Stehr, Hans von Storch
openaire   +1 more source