week 1

Question 1

what is fluid mech

Answer 1

this is the science that deals with the behavior of fluids at rest or in motion

Question 2

what 2 things can a fluid be?

Answer 2

a gas or liquid

Question 3

what happens to fluid continuously under action

Answer 3

it deforms under shear stress no matter how small

Question 4

what is fluid static

Answer 4

this is the study of fluid at rest

Question 5

what are the 4 properties of fluid

Answer 5

desnity
weight
volume
gravity

Question 6

what is specific volume

Answer 6

this is the ratio of volume of the material to its mass

Question 7

what is specific gravity

Answer 7

the ratio of density of a substance to the density of reference substance
the reference can be water, gas…..

Question 8

what is centroid

Answer 8

the centroid of gravity is the point within the object from which the force of gravity appears to act

Question 9

what is moment of inertia?

Answer 9

this is the measure of an objects resistance to change its roatation
also known to be the capacity of a cross-sectional area to resist bending

Question 10

2 units for moment of inertia

Answer 10

m^4 and KGM^2

Question 11

what are forces acting along an edge called

Answer 11

shearing force