Experiment 1 - Resultant of a Force System Flashcards
An invariant property of a body which
measures its resistance to a change in motion
Mass
The force with which a body is attracted toward the earth or a celestial body by gravitation
Weight
Formula of weight
F = mg
Action exerted by one body upon another
Force
Two effects of a force
External & Internal
manifested by a change in, or a tendency to change, the state of motion of the body upon which it acts
External Effect
produces stress and deformation in the body
Internal Effect
Characteristics of a Force
Magnitude, Position of Line of Action & Direction force acts
States that the external effect of a force on a rigid body is the same for all points of application along its
line of action while its internal effect is associated with the point of application of the force
Principle of Transmissibility
standard of measurement
Unit
refers to the type of measurement, regardless of the units used
Dimension
The resultant of two forces is the diagonal formed on the vectors of these forces
The Parallelogram Law
A single force whose effect is the same as the combined effect of a given set of forces
Resultant
The resultant of two forces is the _______ of the parallelogram whose initial sides are the vectors of these forces
diagonal
The process of splitting or dividing a vector into its parts called components
Resolution
Effective value of a vector along a given direction
Component
Formula of Fx
Fcosθ
Formula of Fy
Fsinθ
The forces can be resolved into components that coincide with arbitrary chosen axes. The components can be added algebraically, and the resulting value will be known as the resultant vector
Analytical Solution
Solution based on the parallelogram law.
Graphical Solution
Formula of F (if Fx and Fy are known)
F = sqrt(Fx^2 + Fy^2)
Formula of θ (if Fx and Fy are known)
tan^-1(Fy/Fx)
any arrangement where two or more forces act on a body or a group of bodies.
Force System
