STATICS 213: MIDTERM - Terminologies

Question 1

Is a branch of Physical Science which describes and predicts the conditions of
rest or motion of bodies under the action of forces.

Answer 1

MECHANICS

Question 2

3 Divisions of Mechanics

Answer 2

• Rigid Bodies
• Deformable Bodies
• Fluids

Question 3

It deals with bodies at rest.

Answer 3

STATICS

Question 4

It deals with bodies in motion.

Answer 4

DYNAMICS

Question 5

This states that two forces acting on a particle maybe replaced by a single force, called the resultant, obtained by drawing the diagonal of the parallelogram which has sides equal to the given forces.

Answer 5

The Parallelogram Law

Question 6

This states that the conditions of equilibrium or of motion of a rigid body will
remain unchanged if a force acting at a given point of the rigid body is replaced by a force of the same magnitude and same direction, but acting at a different point, provided that the two forces have the same line of action.

Answer 6

The Principle of Transmissibility

Question 7

Newton’s law where the resultant forces acting on a particle are zero, the particle will remain at rest (if originally at rest) or will move with constant speed in a straight line (if originally in motion).

Answer 7

FIRST LAW

Question 8

If the resultant force acting on a particle is not zero, the particle will have acceleration proportional to the magnitude of the resultant and in the direction of this
resultant force.

Answer 8

SECOND LAW

Question 9

The forces of action and reaction between bodies in contact have the same magnitude, same line of action and opposite sense.

Answer 9

THIRD LAW

Question 10

This states that two particles of mass M and m are mutually attracted with equal and opposite forces F and F’ of magnitude F given by the formula.

Answer 10

Newton’s Law of Gravitation

Question 11

It represents the action of one body on another and is generally characterized by
its point of application, its magnitude, and its direction.

Answer 11

FORCE

Question 12

The infinite straight line along which the force acts, it is characterized by the it forms with fixed axis.

Answer 12

LINE OF ACTION

Question 13

A system of force in which the lines of action of all the forces intersect at a common
point.

Answer 13

Concurrent Force System

Question 14

Forces that lie on one plane (two dimensional)

Answer 14

Coplanar

Question 15

Forces in space (three dimensional).

Answer 15

Spatial

Question 16

A system consists of forces that are parallel.

Answer 16

Parallel Force System