Test 2, Ch. 3-4 Flashcards
What is true about tension with a pulley
the cable on the pulley is subjected to a constant tension throughout its length
Moment
the measure of the tendency of the force to make a rigid body rotate about a point of fixed axis
Magnitude of cross product
ABsin(theta)
Principle of transmissibility
a force can be applied anywhere along its line of action and still create the same moment
Couple force
two forces having the same magnitude but opposite direction and separated by a distance d.
Where does r point for a couple moment
from -F to F
If you move F to point o what must you add to the system?
a moment equal to the moment generated by F about o before it was moved
Concurrent force system
the lines of action of all the forces intersect at a common point
coplanar system
the lines of action of all the forces are in the same plane
