Physics chapter 4 Flashcards
What is the principal of moment
That when the in equilibrium, the sum of the clockwise moment should be the same as the anti-clockwise moment.
What is the calculation of momebt
Force x Distance
Definition of moment
Turning effects of a force about a pivot
The SI unit for moment
Nm
What does a vector have
A magnitude and a direction
Define equilebrium
A state of balance between opposing forces or actions
Define center of mass
Imaginary point in a body where the total mass seems to be acting
When is an object stable
As long as the center of mass is over the center
Define center of gravity
The point at which the distribution of weight is equal in all directions, and depends on the gravitational field.
Define stability.
The ability of an object to maintain its balance after being disturbed.
How does lowering an object center of mass/gravity affect its stability?
It makes the object more stable.
