ENGINEERING MECHANICS

Question 1

also called Coulomb friction, occurs when unlubricated surfaces of two solids are in contact and slide or tend to slide from each other. If lubricant separates these two surfaces, the friction created is called lubricated friction. This section will deal only with dry friction.

Answer 1

DRY FRICTION

Question 2

occurs when layers of two viscous fluids moves at different velocities. The relative velocity between layers causes frictional forces between fluid elements, thus, no fluid friction occurs when there is no relative velocity.

Answer 2

FLUID FRICTION

Question 3

also called friction drag is a component of the force resisting the motion of a solid body through a fluid.

Answer 3

SKIN FRICTION

Question 4

is associated with shear deformation of the solid materials subjected to cyclical loading. As deformation undergo during loading, internal friction may accompany this deformation.

Answer 4

INTERNAL FRICTION

Question 5

A force indicates the amount of force (expressed as N or kN) that will be exerted on another body

Answer 5

MAGNITUDE

Question 6

The direction in which it acts

Answer 6

Direction

Question 7

The nature of force may be tensile or compressive

Answer 7

Nature

Question 8

The point at which the force acts on the body is called ?

Answer 8

Point of Application

Question 9

used to locate the position of a point in space and thereby describe the size of a physical system.

Answer 9

Length

Question 10

conceived as a succession of events.

Answer 10

Time

Question 11

A measure of a quantity of matter that is used to compare the action of one body with that of another.

Answer 11

Mass

Question 11

considered as a “push” or “pull” exerted by one body on another.

Answer 11

Force

Question 12

A branch of the physical sciences that is concerned with the state of rest or motion of bodies that are subjected to the action of forces.

Answer 12

Mechanics

Question 13

Deals with the equilibrium of bodies, that is, those that are either at rest or move with a constant velocity

Answer 13

Statics

Question 14

Concerned with the accelerated motion of bodies.

Answer 14

Dynamics

Question 15

Defined as the science which describes and predicts the conditions of rest or motion of bodies under the action of forces.

Answer 15

Engineering Mechanics

Question 16

A branch of Engineering
Mechanics in which we consider the effects
and distribution of forces on rigid bodies
which are and remain at rest.

Answer 16

Statics

Question 17

A branch of Engineering Mechanics
in which we consider the various motions of rigid bodies and the correlation of these
motions with the forces causing them.

Answer 17

Dynamics

Question 18

A branch of Engineering
Mechanics that studies the position,
acceleration and speed of an object.

Answer 18

Kinematics

Question 19

A branch of Engineering
Mechanics that studies the cause of
motion of an object.

Answer 19

Kinetics

Question 20

The action exerted by one body upon
another.

Answer 20

Force

Question 21

All forces on the certain body lies
in one plane

Answer 21

COPLANAR

Question 22

Forces act or lie in two or
more plane

Answer 22

NON COPLANAR

Question 23

All forces lie only in one point

Answer 23

CONCURRENT

Question 24

All forces originates or
coming from different point

Answer 24

NON CONCURRENT

Question 25

All forces are parallel to each
other.

Answer 25

PARALLEL

Question 26

A force diagram, which is also known as a free body diagram, is a sketch in which all the force vectors acting on an object are drawn with their initial points at the location of the object.

Answer 26

FREE BODY DIAGRAM

Question 27

FREE BODY DIAGRAM IS ALSO KNOWN AS A

Answer 27

FORCE DIAGRAM

Question 28

Determines the motion of the
body. Overall results or overall effect of the
forces on a certain body

Answer 28

RESULTANT