elasticity Flashcards
1
Q
what is shear stress
A
- shear stress makes layers of fluid slide over each other
- a shear stress force is parallel to an area
2
Q
unit for viscocity
A
pascal seconds
3
Q
what is hooke’s law
A
for a material within its elastic limit, the force applied is directly proportional to the extension of the material
4
Q
equation for extension using force
A
Extension = Force/stiffness
5
Q
what happens to the force of the string as the stiffness increases
A
- as the stiffness on a spring increases, more newtons of force an are required to stretch the spring
- a stiffer spring has a steeper gradient
6
Q
elastic definition
A
the object can return to its original shape after being stretched
7
Q
A
