3.1-3.6 Flashcards
stability, motions and pressure
What is moment?
The turning effect of a force
What is the equation of moment?
M= force x perpendicular distance
What is the direction of moment described with
Clockwise
Anti-Clockwise
What is equilibrium
when the bar is at a state of balance
(clockwise moment is equal to anti-clockwise moment)
if an object is in equilibrium…
sum of clockwise moment about any point is equal to the sum of anti-clockwise about that point
What is the center of mass?
the center of gravity. small gravitational forces act like a single force on the center of gravity
- point of an object where it can be balanced
can the center of mass change?
Yes, with the change in shape
the lower the center of mass…
the more stable an object is
the bigger the force applied…
the bigger the moment
the bigger the perpendicular distance…
the bigger the moment
what is the equation of pressure
Pressure= Force/ Area
what is pressure measured in?
Pascals (Pa)
