Forces and elasticity (AQA GCSE Physics): Flashcards
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Deformation definition
Deformation definition
Change in shape when force is applied to materials
Min. forces needed for deformation
Min. forces needed for deformation
More than one force
Two types of deformation
Two types of deformation
Elastic and inelastic
Elastic deformation definition
Elastic deformation definition
Material returns to original shape after force removed
Inelastic deformation definition
Inelastic deformation definition
Material doesn't return to original shape, stays changed
Forces causing bending
Forces causing bending
Two forces in opposite directions (clockwise & anticlockwise)
Forces causing stretching
Forces causing stretching
Two tension forces pulling away from each other
Forces causing compression
Forces causing compression
Two equal forces pushing towards each other
Is elastic deformation temporary or permanent?
Is elastic deformation temporary or permanent?
Temporary
Is inelastic deformation temporary or permanent?
Is inelastic deformation temporary or permanent?
Permanent
Straight line on force-extension graph means
Straight line on force-extension graph means
Force and extension are directly proportional
Limit of proportionality
Limit of proportionality
Point where force-extension graph line stops being straight
What happens past limit of proportionality?
What happens past limit of proportionality?
Material may not return to original shape
Example of elastic deformation material
Example of elastic deformation material
Rubber bands or metal springs (within limits)
Example of inelastic deformation material
Example of inelastic deformation material
Plasticine, clay, or overstretched elastic bands