Hookes law

Question 1

what does Hookes law state

Answer 1

The extension of an elastic object is directly proportional to the force applied, up to the limit of proportionality

Question 2

Directly proportional means that

Answer 2

as the force is increased, the extension increases

Question 3

The limit of proportionality is the

Answer 3

point beyond which the relationship between force and extension is no longer directly proportional

Question 4

what type of relationship is Hookes law

Answer 4

linear

Question 5

what is elastic behaviour

Answer 5

is the ability of a material to recover its original shape after the forces causing the deformation have been removed

Question 6

what happens once something passes its limit of proportionality

Answer 6

undergoes deformation

Question 7

deformation can be (2)

Answer 7

elastic or inelastic

Question 8

what is deformation

Answer 8

is a change in the original shape of an object

Question 9

inelastic deformation

Answer 9

when the object does not return to its original shape after the deforming forces are removed

Question 10

is inelastic deformation permanent

Answer 10

yes

Question 11

is elastic deformation permanent

Answer 11

no

Question 12

elastic deformation

Answer 12

when an object returns to it original shape after deforming forces are removed from it

Question 13

how do you investigate Hookes law (springs and rubber bands)

Answer 13

• you need a clamp and stand, a ruler, a spring and rubber band, some masses, a mass hanger, a pointer and a G-clamp.

-record the length of the spring

• Add the 100 g mass hanger onto the spring / rubber band
• record the length of the spring (will have extended)
• record extension (by subtrcting extended length by original length)

repeat thi with masses of different weights

repeat overall to get an average

plot results on graph

because hookes law is linear, the line should be straight up to where it obeys hookes law.