POE Stress, Strain, Review of Electricity and VEX

What relationship exists between applied force and strain?

• direct

• indirect

• none at all

This refers to the ratio of tensile stress to tensile strain.

• Bulk Modulus of elasticity

• Shear Modulus of Rigidity

• Young's Modulus of elasticity

A mathematical property of a cross section (measured in inches) that gives important information about how that cross-sectional area is distributed about a centroidal axis:

• Centroid Principles

• Moment of Inertia

• Modulus of Elasticity

• Beam Deflection

Beam A and B are the same material and same dimensions. What distinguishes beam A from beam B?

• Beam A will have a greater resistance to bending because it has a lower moment of inertia.

• Beam A will have a greater resistance to bending because it has a higher moment of inertia.

• Beam B will have a greater resistance to bending because it has a lower moment of inertia.

• Beam B will have a greater resistance to bending because it has a higher moment of inertia.

Tags

NGSS.HS-PS2-1

Correct formula for calculating beam deflection:

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Tags

NGSS.HS-PS2-4

In the formula above, how to do read the 'Σ' symbol?

• Average of

• Product of

• Sine of 

• Sum of

How do you calculate the area of this shape?

A mathematical property that relates the stiffness of an object to its shape.

• Moment of Inertia

• Modulus of Elasticity

• Deflection

• Deformation

A mathematical property that relates the stiffness of an object to its material chemical properties.

• Moment of Inertia

• Modulus of Elasticity

• Deflection

• Deformation

What does the symbol, Ϭ , stand for?

• axial force

• total deformation

• stress

• the difference over time