Mechanisms

Question 1

What are the three basic building blocks of mechanisms

Answer 1

Input
Process
Output

Question 2

What is an input

Answer 2

The input is usually a force and initiated the process

Question 3

What is the process

Answer 3

The process will change the magnitude or direction of the force

Question 4

What is the output

Answer 4

The output is what performs the desired task.

Question 5

What are the three types of levers

Answer 5

Fulcrum
Load
Effort

Question 6

What is the arrangement of a class 1 lever?

Answer 6

Load, fulcrum then effort

Question 7

An example of a class 1 lever?

Answer 7

Scissors

Question 8

An example of a class 3 lever

Answer 8

Tweezers

Question 9

The arrangement of a class 2 lever

Answer 9

Fulcrum, then load the effort

Question 10

The arrangement of a class 3 lever?

Answer 10

Fulcrum, effort then load

Question 11

An example of a class 2 lever?

Answer 11

Wheelbarrow

Question 12

What are gears

Answer 12

Gears are wheels which mesh to transmit rotary motion. When two or more gears mesh it becomes a gear train.

Question 13

What are the two types of gear trains?

Answer 13

Simple

Compound

Question 14

What are the types of gear systems?

Answer 14

Rack and Pinion
Worm and Wheel
Bevel gears

Question 15

What does a rack and pinion gear do

Answer 15

Converts rotary motion into linear

Question 16

What does a worm and wheel gear do

Answer 16

For one rotation of the worm the wheel rotates by one tooth

Question 17

What do bevel gears do

Answer 17

They transfer rotary motion through 90 degrees

Question 18

What are the four types of motion?

Answer 18

Linear- Straight line motion
Reciprocating- Straight line back and forwards
Rotary- Round and round (circles)
Oscillating- Swinging backwards and forwards