Prentice Hall "Conceptual Physics"- The High School Physics Program
Terms in this set (14)
the rotational analog og force; the product of force and the lever arm (measured in newton-meters). torque tends to produce rotational acceleration
the perpendicular distance between an axis and the line of action of a force that tends to produce rotation about the axis
center of mass
the point at the center of an object's mass distribution, where all its mass can be considered to be concentrated. For everyday conditions, it is the same as the center of gravity
center of gravity
the point at the center of an object's weight distribution, where the force of gravity can be considered to act. Abbreviated CG
the state of an object balanced so that any small displacement or rotation lowers its center of gravity
the state of an obejct balanced sohat any small displacement or rotation raises its center of gravity
the state of an object balanced so that any small movement neither raises nor lowers its center of gravity
How does one make an object rotate or turn?
apply a torque
What occurs when balanced torques act on an object?
there is no change in rotation
Where is an object's center of mass located?
the center of mass of an object is the point located at the object's average position of mass
How is the center of gravity of an object related to its center of mass?
For everyday objects, the center of gravity is the same as the center of mass
What is the rule for toppling?
If the center of gravity of an obejct is above the area of support, the object will remain upright
On what does the location of a person's center of gravity depend?
depends on body orientation, center of gravity of a person is not located in a fixed place
What happens to the center of gravity when an object is toppled?
When an object is toppled, the center of gravity of that object is raised, lowered, or unchanged