Science Forces and Structures

Test on Wednesday

when two opposing forces act on the same structure

shear

twisting force

torsion

pulling force

tension

pushing internal force that acts to reduce the size of an object.

compression

forces felt from the inside of a structure

internal force

forces felt from the outside of a structure

external force

Any sort of push or pull

what is a force

the effect of gravity acting on the structure it is the wight of the actual structure which will fall if it is unable to support the load

dead load

A force that moves or changes while acting on a structure.

live load

the term used to describe the amount of force acting on an structure

magnitude

the direction that the force is applied

direction

how much force is acting on a structure

net force

where the force strikes on the structure.

point of application

a thin curved or bent component used to envelop space and transmit loads (e.g. boats buildings ships)

shell

has no space inside and is usually made of one solid material

mass/solid

a type of structure in which a skeleton of material supports the weight of the other parts.

frame

the study of interactions between humans and objects

ergonomics