Biomechanics

Fluid Mechanics In Sport

Bernouli sailing

Fluid mechanics or fluid dynamics comes into sport a lot and covers air resistance, drag, projectiles, spin on balls and Bernoulli principle and lift force. Spin Spin is created by applying a force that is off centre to the object being thrown (or kicked) at the point of release. The effects of spin are important …

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Linear Motion & Biomechanics

Speed

Linear motion simply means motion in a straight line (as opposed to circular motion or rotation). In order to talk about linear motion scientifically, we need to be familiar with mass, distance, displacement, speed, velocity, and acceleration. Here we explain Newton’s laws of motion, mass, inertia, momentum, speed, velocity, distance, displacement and graphs of motion. …

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Forces In Biomechanics

Biomechanics Forces

A force is a push or a pull which alters the state of motion of a body and is measured in Newtons (N). Here we cover balanced and unbalanced forces, friction, air resistance, impulse, force-time graphs, and free body diagrams. Free Body Diagrams Free body diagrams are used to show which forces are acting on …

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Spin & The Magnus Effect

Spin and the Magnus effect

Spin is created by applying a force that is off centre to the object being thrown (or kicked) at the point of release. The effects of spin are important in all ball sports and throwing events. The Magnus effect explains why the paths of balls deviate from normal flight path.

Projectiles In Sport

Projectiles

A projectile is anybody which is thrown or jumped into the air. Once it has left the ground it will follow a flight path called a parabola until it once more comes back down to earth. This applies to balls, javelins, discus, long jumpers, high jumpers, and horses showjumping. As far as we know there …

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Bernoulli Principle

Bernoulli principle

The Bernoulli principle explains why aeroplanes fly and racing cars stick to the ground going around corners when they really shouldn’t. It is to do with lift force and downforce created when air flows over an aerofoil. The Dutch-Swiss mathematician, Daniel Bernoulli, discovered that where there is an increase in the velocity of fluid there …

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Air Resistance and Drag

Air resistance

Air resistance is a frictional force that occurs when air passes over the surface of a body. This frictional force is not just limited to air though and it applies in fluids, usually water in a sporting situation. Air resistance, drag, and fluid resistance mean the same thing. Four things affect the amount of air resistance; …

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