Module Four Terminology Assignment

Question 1

Friction can be utilized to establish equilibrium.
True
False

Question 2

The amount of friction force that is available in establishing equilibrium is unlimited.
True
False

Question 3

The friction force available to establish equilibrium is a function of
mass
weight
coefficient of static friction
normal force
all are correct

Question 4

If an object is on the verge of tipping, no friction is present.
True
False

Question 5

If an object is on the verge of tipping, the normal force is located directly underneath the center of gravity.
True
False

Question 6

If an object is on the verge of slipping, Ffriction(max)=________

u(s)*Fn

Fpush (or pull)
both are correct

Question 7

If an object is on the verge of tipping, Mpush/gravity =__________
Fpush*h
Fn*x
both are correct

Question 8

The angle of friction is defined as: the angle formed by
the normal force and the friction force
the normal force and the resultant of the friction and the normal forces
both are correct

Question 9

The angle of friction can also be expressed as:
tan^-1 u(s)
tan^-1 (friction/normal)
tan^-1 (u(s)mg/mg
all four are correct

Question 10

The angle of repose is typically considered when the surface is
flat
slanted
both are acceptable
neither are acceptalbe

Question 11

The angle of repose is defined as the angle of the incline where the object is on the verge of tipping.
True
False

Question 12

Then angle of repose can be expressed as:
tan^-1 u(s)
tan^-1 (Friction/Normal)
both are correct
neither are correct

Question 13

The angle of repose can also be described as
tan^1 (u(__)__g____[theta]/F________
s,m,cos,friction
s,m,sin,normal
s,m,cos,normal
all are correct

Question 14

The centroid defines the center of _____________
mass
area
volume
all three are correct

Question 15

The center of gravity can be accurately placed at the centroid location.
True
False

Question 16

If no other forces are acting on the body, the body will not rotate due to its weight.
True
False

Question 17

If a composite 3D shape is made up of seperate shapes of varying densities, in order to find a useful centroid, the center of mass should be located. However, the volume needs to be determined.
True
False

Question 18

Aspect ratio is defined as the height/width. A high aspect ratio would indicate a _____________moment of inertia about the axis parallel to the _____________________.
large,height
small,height
large,width
small,width

Question 19

A T shape is considered top heavy. The area above the centroid (closer to the T) is _____________prone to _______________than the area below the centroid
more,rotation
less,rotation
equally,rotation
cannot determine without the dimensions

Question 20

The parallel axis theorem needs to be used _________ a _______________is ______________about the axis of rotation (interest).
always when,shape,symmetric
whenver,shape,not symmetric
whenever,centroid,not symmetric
none of these are correct

Question 21

A shape's moment of inertia cannot be determined unless the centroidal axis has been identified.
True
False

Question 22

A square's moment of inertia can be defined as:
1/12(side)^4
1/12(side)^3
both are correct

Question 23

Iy = Ix is true for:
square
Circle
both are correct
neither are correct

Question 24

The moment of inertia can be determined by intergrating the _________of a shape_____________.
area,twice
area,four times
area, three times
No answer text provided.

Question 25

The moment of inertia is also known as the ________________________.The centroids are also known as the ___________________.
mass moment of inertia, center of gravity
second moment of area, central axis
second moment of area, center of gravity

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