POE Unit 2 Concept Review

A vector has both ____ and _____

• speed and length
• magnitude and direction
• degrees and radians
• style and grace

The _______ of two or more vectors is the sum of the vectors.

• components
• scalar
• resultant
• magnitude

Tags

NGSS.MS-PS2-2

A ___________________ is the most stable shape

• triangle

• circle

• parallelogram

• square

When a member is being pushed together or crushed, this is known as a ______ force

• tension

• shear

• torsion

• compression

____________ occurs when a force is pulling a member apart.

• compression

• torsion

• shear

• tension

If a truss has the proper combination of joints and members, it is said to be

• statically determinate

• unstable

• statically indeterminate

Consider the following forces, what additional force is needed to keep the block in static equilibrium?

• 9N force pointing up

• 9N force pointing down

• 16N force pointing down

• 16N force pointing up

Tags

NGSS.HS-PS2-1

What are the external forces acting on the truss?

• F1 = 75 N, F2 = 75 N

• F1 = 100 N, F2 = 100 N

• F1 = 115N, F2 = 115N

Tags

NGSS.HS-PS2-1

If a structure is statically determinate it

• is mathematically solvable

• cannot be disfigured

• can handle large forces

• will break easily

Tags

NGSS.HS-PS2-3

NGSS.HS-PS2-4

A mathematical property of a cross section that gives important information about how the cross-sectional area is distributed about a centroidal axis

• Modulus of Elasticity

• Moment of Inertia

• Centroid

• Moment