Chapter 5

Question 1

change in shape due to application of force

Answer 1

deformation

Question 2

Found to be proportional to the square of the speed of the object

Answer 2

drag force

Question 3

Fd proportional v²

Fd = 1/2 Cp Av²

Where C is the drag coefficient, A is the area of the object facing the fluid, and p is the density of the fluid

Answer 3

drag force

Question 4

force that opposes relative motion or attempts at motion between systems in conctact

Answer 4

friction

Question 5

proportional relationship between the force F on a material and the deformation L it causes F=k(delta)L

Answer 5

Hooke’s law

Question 6

force that opposes the motion of two systems that are in contact and moving relative to one another

Answer 6

kinetic friction

Question 7

fk=mukN, where muk is the coefficient of kinetic friction

Answer 7

magnitude of kinetic friction

Question 8

fs _< musN, where mus is the coefficient of static friction and N is the magnitude of the normal force

Answer 8

magnitude of static friction

Question 9

deformation perpendicular to the original length of an object

Answer 9

shear deformation

Question 10

force that opposes the motion of two systems that are in contact and not moving relative to one another

Answer 10

static friction

Question 11

Fs=6pirnv, where r is the radius of the object, n is the viscosity of the fluid, and v is the object’s velocity

Answer 11

Stokes’ law

Question 12

ratio of change in length to the original length

Answer 12

strain

Question 13

ratio of force to area

Answer 13

stress

Question 14

breaking stress that will cause permanent deformation or fraction of a material

Answer 14

tensile strength