PLTW Statics Review

What does the Modulus of Elasticity represent?

• Stiffness of an Object based on material
• Stiffness of an object based on shape
• Amount a beam Bends
• The Distance between Beams

What does the Moment of Inertia represent?

• Stiffness of an Object based on material
• Stiffness of an object based on shape
• Amount a beam Bends
• The Distance between Beams

What is the centroid of this object? (x,y)

• 0.375 in, 0.25 in
• 0.25 in, 0.375 in
• 0.25 in, 0.25 in
• 0.25 in, 0.167 in

Which of the following is correct for finding the centroid of this object?

• 1/3 height, 1/2 base
• 1/2 base,  height
• 1/2 height,  1/2 base
• 1/3 base, 1/3 height

What is Beam Deflection

• The Amount a Beam Bends
• The stiffness of a Beam based on the Material
• The stiffness of a beam based on shape
• The distance between supports

If I am given an adjacent leg of a right triangle and an angle which trig function would I use to find the Hypotenuse

• sine
• cosine
• tangent
• pythagorean theorem