T5 forces and elasticity Flashcards
1
Q
explain the relationship between the force applied and the extension of an elastic object
A
the extension is directly proportional to the force applied, provided that the limit of proportionality is not exceeded
2
Q
what is meant by an inelastic (plastic) deformation
A
- a deformation which results in the object being permanently stretched
- the object doesn’t return to its original shape when the force is removed
3
Q
equation relating force, spring constant and extenstion
A
force = spring constant x extension
force (N), spring constant (N/m), extension (m)
4
Q
what type of energy is stored in a spring when it is stretched
A
elastic potential energy
5
Q
what can extension be replaced with in the equation for spring force
A
compression