STATICS 0214

Question 1

a method or a process used to solve for the unknown forces acting on members of a truss. The method centers on the connection points between the members, and it is most useful when you need to solve for all the unknown forces in a truss structure.

Answer 1

METHOD OF JOINTS

Question 2

is an alternative to the method of joints for finding the internal axial forces in truss members. It works by cutting through the whole truss at a single section and using global equilibrium (3 equations in 2D) to solve for the unknown axial forces in the members that cross the cut section.

Answer 2

METHOD OF SECTION

Question 3

The process used to analyze frames and machines involves breaking the structure down into individual components in order to solve for the forces acting on each component. Sometimes the structure as a whole can be analyzed as a rigid body, and each component can always be analyzed as a rigid body.

Answer 3

METHOD OF FRAMES

Question 4

A contact resistance exerted by one body to another body

Answer 4

FRICTION

Question 5

also called coulomb friction, the principle of it were developed largely from the experiments of coulomb in 1781 from the work of MORIN from 1831 to 1834

Answer 5

DRY FRICTION

Question 6

If F is greater than Fmax, its is in

Answer 6

Kinetic Friction

Question 7

If F is less than Fmax, it is in

Answer 7

Static fricion

Question 8

is a tapered object which converts a small input force into a large output force using the principle of an inclined plane.

used often to adjust the elevation of the structural or mechanical parts.

Answer 8

WEDGE

Question 9

act between bodies act perpendicular to the contacting surfaces.

Answer 9

Normal Force

Question 10

are between bodies which act parallel or tangential to the contacting surfaces and are created by the microscopic or large scale roughness of the surfaces.

Answer 10

Friction forces

Question 11

the point where all of an object’s weight may be concentrated and still have the same external effect on the body.

Answer 11

Center of gravity

Question 12

is a weighted average like the center of gravity, but weighted with a geometric property like area or volume, and not a physical property like weight or mass.

Answer 12

centroid

Question 13

the moment of any force is equal to the algebraic sum of the moments of the components of that force.

Answer 13

Varignon’s Theorem

Question 14

Also known as the principle of moments

Answer 14

Varignon’s Theorem

Question 15

also called the second moment of area, is the product of area and the square of its moment arm about a reference axis.

Answer 15

moment of inertia