Catégories : Tout - needs - effort - mechanisms - user

par Woon Kiat Il y a 16 années

690

MECHANISMS

MECHANISMS

MECHANISMS

PROBLEMS

Inclined planes
Travel long

Time

Distances

Metal mechanisms
Saws
Knifes

Sharp

Hurt user

Turn rusty

Stiff

Hard to use

Screws
Scissors

NEEDS

Move a large load with a small effort
User
Thoughts

Advantages

Reduce time spent

Less effort

Easy to use

Friendly

Safe

Pulley
Groove along edge for

Belt

String

Wheel

Rotation

String/Belt

Pull/Bring load

Down easily

Up easily

Lever
Pivot/Fulcrum

Middle

For rotation

Platform for

Load

Effort