Physics 2b

Question 1

1. Tension
2. Extension
3. Compression
4. What is hooks law

Answer 1

1. A force acting within a material in a direction that would extend the material
   2.An increase in the the size of a material sample caused by tension force
2. A force acting within a material in a direction that would squash the material. Also the decrease in size of a material sample under a compressive force
3. Hooks law states that the force needed to extend a spring is proportional to the extension (until it reaches limit of proportionality)

Question 2

1. What is limit of proportionality
2. Force applied=

Answer 2

1. The maximum extension an object can have which is still proportional to the load applied
2. Force applied(N) = stiffness constant (N m–1) X extension(m)

Question 3

Behaving elastically vs plastically

Answer 3

Regains original dimensions when deforming forve is removed VS retains its shape after deforming force is removed