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Forces and their interactions GapFill
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All measurements can be categorised as either
(which have size but not direction) or
(which have both size and direction), which include forces.
Forces can be categorised as contact or non-contact forces, depending on whether they require contact between bodies to act, or whether they act at a distance. Examples of contact forces include , and examples of non-contact forces include .
Gravity is the attraction of objects to each other; it's responsible for a wide variety of effects, from making sure you stay on the ground to controlling the orbits of planets around the Sun. is the name given to the gravitational attraction between an object and a planet (usually Earth), which acts from a point on an object known as its , and can be measured using a device called a .
Whenever a force changes a system, work is done. The work done by a force is equivalent to the force.
Forces can result in objects changing shape, known as deformation, which can be either stretching, bending or compressing the object. When the relationship between the force exerted on an object and the change in the object's shape is linear (produces a straight line graph), there is deformation. After a point known as the , less force is required to produce an extension of the same size, so the relationship is not linear; this is known as deformation.
Forces can be categorised as contact or non-contact forces, depending on whether they require contact between bodies to act, or whether they act at a distance. Examples of contact forces include , and examples of non-contact forces include .
Gravity is the attraction of objects to each other; it's responsible for a wide variety of effects, from making sure you stay on the ground to controlling the orbits of planets around the Sun. is the name given to the gravitational attraction between an object and a planet (usually Earth), which acts from a point on an object known as its , and can be measured using a device called a .
Whenever a force changes a system, work is done. The work done by a force is equivalent to the force.
Forces can result in objects changing shape, known as deformation, which can be either stretching, bending or compressing the object. When the relationship between the force exerted on an object and the change in the object's shape is linear (produces a straight line graph), there is deformation. After a point known as the , less force is required to produce an extension of the same size, so the relationship is not linear; this is known as deformation.