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Seesaw spade / Shovel

Seesaw spade
Seesaw spade

This spade has a support fixture, that has comes from the principle of the lever. When people lift their spade after digging with sands, all they need to do is just pull the spade in their hand behind. By the principle of the lever, the power that peoples push down is transferred to the pulling up the head of spade. At this point, unlikely to the pulling up power, people's pushing down powers can include the gravity, which makes the pushing down power more powerful than pulling up power.

University

Nottingham Trent University

Nottingham Trent University
Nottingham, United Kingdom

Hyongho Park,
Nottingham Trent University