QUIZ 2/6 (Statics)

Question 1

Newtons laws of Motion

Answer 1

1. A body remains at rest or in motion at a constant velocity, unless acted on by a force. (Inertia)
2. The force on a body is directly proportional to the bodies mass and acceleration (F = m • a); and
3. For every action, there is always opposed an equal reaction (conservation of momentum) (think of a jar sitting on a table, the downward force from the object is equal to the force resisting the jar

Question 2

Newtons laws of Motion

Answer 2

1. A body remains at rest or in motion at a constant velocity, unless acted on by a force. (Inertia)
2. The force on a body is directly proportional to the bodies mass and acceleration (F = m • a); and
3. For every action, there is always opposed an equal reaction (conservation of momentum) (think of a jar sitting on a table, the downward force from the object is equal to the force resisting the jar

Question 3

Calculate the area of a shape

Question 4

Calculate stress and strain

Question 5

Calculate stress and strain

Question 6

Convert load and deflection into stress and strain

Question 7

Plot stress and strain

Question 8

Calculate modulus of elasticity and modulus of rupture

Question 9

Use trigonometry to decompose force vectors into their component parts

Question 10

Calculate density

Question 11

Calculate density

Question 12

In a structural support frame what force is a beam and a column acting in (different) flexure, compression, tension, bend, twist

Answer 12

Column: compression
Beams: flexure

Question 13

In a structural support frame what force is a beam and a column acting in (different) flexure, compression, tension, bend, twist

Answer 13

Column: compression
Beams: flexure

Question 14

In solid panel construction what force is the slab and walls acting in

Answer 14

Walls: compression
Slabs: flexure

Question 15

What force are portals frames acting in

Answer 15

Entire frame is bending in compression

Question 16

Why are trusses so practical in construction?

Answer 16

• Axial forces in webs (I.e tension or compression ONLY)
• connectors typically steel
• very cost effective
• efficient use of structural materials

Question 17

A force is…

Answer 17

A PUSH or a PULL

Question 18

A force has… (three components)

Answer 18

1. Sense
2. Magnitude
3. Direction

Question 19

A stress is…

Answer 19

The INTENSITY of the force EXPERIENCED by the material. The greater the area resisting the force the lesser the stress

Question 20

A stress is…

Answer 20

The INTENSITY of the force EXPERIENCED by the material. The greater the area resisting the force the lesser the stress