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Updated: Jun 27, 2026

Cargo Loading onto Kinesin Powered Molecular Shuttles
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Cargo Loading onto Kinesin Powered Molecular Shuttles

Published on: November 4, 2010

生物力学:带降低了承载负载的成本

Lawrence C Rome1, Louis Flynn, Taeseung D Yoo

  • 1Department of Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. lrome@sas.upenn.edu

Nature
|December 22, 2006
PubMed
概括

使用班吉绳来悬挂背包负荷,可以减少垂直运动和步行所需的能量. 这一创新允许携带更重的载荷,伤害风险更小.

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Rolling Resistance01:21

Rolling Resistance

When a solid cylinder rolls steadily on a rigid surface, the normal force applied by the surface on the cylinder is perpendicular to the tangent at the contact point. However, since no materials are entirely rigid, the surface's reaction to the cylinder involves a range of normal pressures.
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...
Plastic Behavior01:21

Plastic Behavior

A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and reloaded.