/
Chapter 3
Deleted
Save to my account
Sign up
Chapter 3
Chapter 3
Study
1
Question
Component Vector
Answer
Represents the components of a vector.
2
Question
Position of Vectors
Answer
A vector may be drawn anywhere, without regard to the position of the point to which it applies.
3
Question
Vector Addition
Answer
The sum of two vector quantities is a quantity whose effect is the same as the combined effect of the two vectors.
4
Question
Vector quantity
Answer
A quantity that has magnitude, direction, and sense, such as force, velocity, acceleration.
5
Question
Instantaneous Axis of Velocity
Answer
Each member of a machine is either rotating about a fixed axis or about a moving axis. Instantaneously this moving axis may be thought of as a stationary axis with properties similar to a fixed axis.
6
Question
Velocities in a Machine
Answer
In analyzing the operation of a machine, it is necessary to consider the motion of the various members or resistant bodies constituting the machine.
7
Question
Rotating and Oscillating Cranks
Answer
The magnitude of the instantaneous linear velocity of a point on a revolving body, rotating crank, or oscillating crank is proportional to the distance of that point from the axis of rotation of the body or crank.
8
Question
Scalar quantity
Answer
A quantity that has magnitude only, such as 1 ft, 2 lb, etc.
9
Question
Resultant Vector
Answer
The vector obtained by adding together the component vectors.
10
Question
Components
Answer
The quantities added together to obtain the resultant
11
Question
Vector origin or tail
Answer
The initial end of a line that represents a vector.
12
Question
Vector Composition
Answer
The process of obtaining the resultant of any number of vectors.
13
Question
Resolution and Composition
Answer
If the velocity of one point on a body is known, the velocity of any other point on that body may be obtained by resolving the known velocity vector into components along and perpendicular to the line joining these points and making one of the components of the velocity of the other point equal to the component
14
Question
Vector Resolution
Answer
The reversed process of breaking up a vector into its component vectors.
15
Question
Resultant
Answer
The sum of the quantities added together to obtain the resultant vector.
16
Question
Scales
Answer
In the graphical solution of problems, it is necessary to draw the machine full scale, to a smaller scale, or to a larger scale.
17
Question
Vector
Answer
A line that represents a vector quantity.
18
Question
Vector terminus or head
Answer
The other end of a line that represents a vector.