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STRUCTURES (FORCES (Gravity, which pulls us towards the earth and gives us…
STRUCTURES
FORCES
Gravity, which pulls us towards the earth and gives us weight.
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Forces caused by the effects of heat, etc.
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A structure is the set of elements in a body that are intended to resist the effects of the forces that act on it . It prevents a body from breaking or becoming too deformed
STRESSES
Livings things feel this effect — it can be very slight or if it is strong it can even hurt us. Obiects do not have feelings, but forces act on them in a similar way and produce deformations. In both cases this internal tension is called stress.
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Forces try to stretch the object they are acting upon. Opposing forces move outwards away fromthe body along the same trajectory but in opposite directions.
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Forces try to bend a body. This stress acts on elements that are supported at their extremities and have a weight applied to them. There are two forces that are separated by a certain distance and a third force acting in the opposite direction.
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Forces try to flatten or compress a body. Opposing forces move inwards towards one another along the same trajectory and in opposite directions. The body tends to lose its shape and becomes compressed.
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Shear or cutting
The forces act like two scissor blades they are very close together, moving in opposite directions, as they try to cut an object
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A force is anything that can deform a body (static effect) or change its state of movement or rest (dynamic effect)
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