Statics Finals

Area of Rectangle

• bh

• πr²

• πr²/2

• 1/2 bh

At a joint subjected to the action of three members but no other load, if two of the members are * , the force in the third member must be * .

• Incline, Zero

• Straight, Zero

• Coplanar, Zero

• Collinear, Zero

All * notes on solution are just notes or reminders on that

part of solution.

• Incline

• Coplanar

• Collinear

• Decline

The term * is used in the sense of having no deformation. Actual members are, of course, subject to elastic deformation which can be neglected if small compared with the dimensions of the

truss.

• Static

• Dynamic

• Rigid

• Tension

It is important, however, not to pass the plane so as to cut more than three members whose internal forces are unknown, because the method of sections is based on the equilibrium of non-concurrent forces for which no more than three unknowns can be determined.

• True

• False

Area of Any Triangle

• 1/2 bh

• bh

• r²α

• 2rα

In the method of sections, a * plane is passed through the entire truss separating

it into two parts without cutting more than three members.

• Closing

• Cutting

• Compressing

x̄ or ȳ Segment of Arc

• rsinα/α or 0

• 2rsinα/3α or 0

• b-x'

• h(n+1/4n+2

ȳ of Triangle

• 4r/3π

• 0

• b/3

• h/3

x' of Parabolic Segment (If vertex is at y axis)

• 2/5 b

• 2/5 h

• b/n+2

• h/n+2