4 - ELASTICITY OF MATTER: HOOKE'S LAW

Question 1

At constant temperature, solids retain their definite shapes and sizes unless acted on by
an ___________.

Answer 1

external stress

Question 2

When an ___________ acts on a solid, its shape, size, or orientation may change. Oftentimes, once it is removed, the solid would return to its original condition.

Answer 2

external stress

Question 3

When the solid returns to its original shape and size after all the stresses have been removed, the solid is said to be

Answer 3

elastic

Question 4

__________ of a is its ability to return to its original size and shape after being subjected to some stresses.

Answer 4

Elasticity of a body

Question 5

The greatest stress for which a body can still return to its original size and shape is called the ________ of the body.

Answer 5

elastic limit

Question 6

When the stress applied to a body is greater than its elastic limit, the body acquires a ___________

Answer 6

permanent deformation.

Question 7

Stretching a rubber tube or spiral spring illustrates _____________.

When no force acts on the spring or on the rubber tube, the tip or end of the body rests at its ______________.

As the force that is pulling the body increases, the body stretches and moves farther from its ____________.

Answer 7

elastic deformations

equilibrium position

equilibrium position.

Question 8

The proportionality between the magnitude of the applied force F and the displacement x from equilibrium can be expressed in an equation called ______________:
F = kx
where k is called the ___________ of the body.

Answer 8

Hooke’s Law

force constant