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23 Cards in this Set
 Front
 Back
 speed is the distance traveled per unit of time

linear


A point on the  edge of a merry go round travels a greater distance in one complete rotation than a point  the center.

outside; nearer


 speed involves the number of rotations or revolutions per unit of time.

rotational


Tangential speed is directly proportional to  for any given rotational speed.

distance


Tangential speed= radial distance X RPM
To find radial distance> 
2pi X r/ time


Newtons Laws:
1st> 2nd> 3rd> 
 unless compelled by force
 acceleration proportional to net force  equal and opposite force 

Property of object to resist change

rotational inertia


The greater the distance between an objects mass concentration and the axis, the greater >

rotational inertia


The rotational inertia of any object depends on .

the axis about which it rotates
ex: 3 pencils (rotational inertia small with pencil core parallel to length of pencil? 

Torque tends to >

twist or change the state of rotation of things


Both rotational inertia and  involve distance from the axis of rotation.

torque


In the case of torque, the distance, which provides leverage is called the 

lever arm


Torque is the product of this  and the force that tends to produce rotation.

lever arm


The lever arm about any axis of rotation is the  distance from the axis to the line along which the force acts.

perpendicular


The center of mass of a baseball bat is toward the  end.

thicker


 is a term popularly used to express center of mass.

center of gravity


Center of gravity is simply the average position of distribution.

weight


When weight is part of the picture we should favor the term 

center of gravity


The center of mass of a ring or a hollow sphere is at the >

center where no matter exists


If we draw a straight line down from the center of gravity of an object of any shape and it falls  it is in stable equilibrium. (it will balance)

inside the base


Any force directed toward a fixed center is called >

centripetal force


A baseball bat has greater rotational inertia about an axis at its >

light end, where the handle is


A condition for mechanical equilibrium is that the sum of the forces acting equal zero. Another condition is that the sum of the >

torques equal zero
