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bending moment

Overview page. Subjects: Sports and Exercise Medicine — Physics.

(about any point or section of a horizontal beam under load) The algebraic sum of the moments of all the vertical forces to either side of that point or section. See moment of a force.

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elastic modulus

Overview page. Subjects: Sports and Exercise Medicine — Physics.

Ratio of stress to strain in a given material. Strain may be a change in length, a twist, or a change in volume. See also flexural rigidity, modulus of compression, modulus of rigidity,...

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fluid mechanics

Overview page. Subjects: Physics — Sports and Exercise Medicine.

A branch of mechanics concerned with the forces that fluids exert on objects that are in or moving through the fluids. The fluids most relevant to exercise and sport biomechanics are air...

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heat balance

Overview page. Subjects: Sports and Exercise Medicine — Physics.

1. A balance sheet showing all the heat inputs to a system (such as a chemical process, furnace, etc.) and all the heat outputs.

2. The equilibrium that...

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natural frequency

Overview page. Subjects: Sports and Exercise Medicine — Physics.

1. The frequency of the free oscillation of a system.

2. The frequency at which resonance occurs in an electrical circuit.

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parallelogram of vectors

Overview page. Subjects: Sports and Exercise Medicine — Physics.

A method of determining the resultant of two vector quantities. The two vector quantities are represented by two adjacent sides of a parallelogram and the resultant is then the diagonal...

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plasticity

Overview page. Subjects: Sports and Exercise Medicine — Physics.

The property of solids that causes them to change permanently in size or shape as a result of the application of a stress in excess of a certain value, called the yield point.

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poundal

Overview page. Subjects: Sports and Exercise Medicine — Physics.

The unit of force in f.p.s. units equal to the force required to impart to a mass of one pound an acceleration of one foot per second per second.

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reaction

Overview page. Subjects: Sports and Exercise Medicine — Physics.

A force that is equal in magnitude but opposite in direction to some other force, in accordance with Newton's third law of motion. If a body A exerts a force on body B, then B exerts an...

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velocity ratio

Overview page. Subjects: Sports and Exercise Medicine — Physics.

The ratio of the distance moved by the point of application effort in a simple machine to the distance moved by the point of application load in the same time.

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