Mechanics Flashcards
3 basic dimensions
-length
-mass
-time
Length, Mass, Time units
meters,kilograms, seconds
Force (definition)
-effect of one body on another
-a push or pull applied to an object
-that which is needed to change the state of motion of an object
Force (unit)
Newtons
1kgx1m/s
Force (equation)
F=ma
Internal Force
From within the system
External force
from outside of the system
Scalar
Magnitude only (number and unit)
length
speed
volume
temp
mass
Vector
Magnitude and direction (number,unit, direction)
force
velocity
acceleration
torque
Types of motion
1 linear
-rectilinear
-curvilinear
2 angular
3 General
Linear motion
translation of the body in which all parts of the body travel in the same direction at the same time
Rectilinear Motion
straight line (running)
Curvilinear motion
curved line (sky diving)
Angular motion
all parts of the body travel through the same angle, in same direction at same time
E.G. hands on a clock, high bar gymnastics, leg left
General motion
combination of linear and angular
e.g. wheels turning in the car results in linear motion