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
- results in the object being permanently stretched
- doesn’t return to its original shape when the force is removed
3
Q
State the equation relating force, spring constant and extension
A
force = spring constant x extension
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
6
Q
What is the equation for elastic potential energy?
A
0.5 x spring constant x (extension)^2
