1 - Vectors

Question 1

When vectors do not have the same line of action, their vector sum is not their algebraic sum but a ________ sum.

Answer 1

geometric

Question 2

Either ___________ or ___________ may determine the geometric method.

Answer 2

graphical method or analytical method

Question 3

Graphical method is of two kinds:

Answer 3

parallelogram method and polygon method.

Question 4

_______ method is especially suitable when more than two vector quantities are considered while the __________ method is more suitable when more than two vectors are given.

Answer 4

parallelogram method
polygon method

Question 5

Graphical methods for the solution of vector problems are frequently not accurate. To get more accurate results, the __________ is used.

Answer 5

analytical method

Question 6

When only two vector quantities are to be added, the sum, which is called the ________, is readily obtained by applying the sine and cosine laws.

Answer 6

resultant

Question 7

If more than two vectors are added, applying the ________ method is more suitable.

Answer 7

component

Question 8

The vectors considered in this activity are _________ forces.

Answer 8

concurrent

Question 9

An instrument used to verify the concurrent forces in the activity is called a

Answer 9

force table

Question 10

The force table determines the _________, a force equal in magnitude to the resultant but opposite in direction

Answer 10

equilibrant

Question 11

A force table should be mounted with its surface horizontal. The object on which the forces act is a _________ at the center of the table. A ________ within the ring prevents motion of the ring before equilibrium is established.

Answer 11

ring
pin

Question 12

Forces are applied on strings that pass over _______ and connected to __________. The direction of each force is read on the circular scale of the force table.

Answer 12

weight hangers.
pulleys