SA.5 Mechanical Devices

Question 1

Linear motion

Answer 1

Moving one direction along straight line

—>

Question 2

Reciprocating motion

Answer 2

Repetitive up-and-down or back-and-fourth linear motion

<—->

Question 3

Rotary motion

Answer 3

Movement on or around an axis
_____
- -
- \/
-_
- ____

Question 4

Oscillating motion

Answer 4

Backwards & forwards along a curved path

<–. ___________ .–>

Question 5

Lever system: Fulcrum

Answer 5

A pivot point around which a lever tuens

Question 6

Lever system: Effort

Answer 6

An input force

Question 7

Lever system: Load

Answer 7

An output force

Question 8

How to calc mechanicak advantage

Answer 8

MA = Load/Effort

Question 9

First, second, third order levers

Answer 9

See images

Question 10

Linkages

Answer 10

See images

Question 11

What is torque (in gears)

Answer 11

A force that causes rotation

Question 12

Drive and idler gear

Answer 12

See images

Question 13

Pulleys

Answer 13

See images

Question 14

Belts

Answer 14

A drive belt (loop of flexible rubber) connects 2 or more pulleys tg. Belt transfers power from pulley to system