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2Ke3 Lever – Mechanics Catapult

$50.00 $38.00

The concept of a catapult:

A catapult applies the concept of lever mechanic.  It uses the elasticity of a belt and wood to balance the downward force.  The lever arm turns the downward force to the shooting power.  The shooting distance increases when the inclined angle of the levering arm sets at 45 degree.

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Description

投石機是冷兵器時代古人戰爭時的重型武器,相當於現代的坦克。投石機利用槓桿式的配重的回轉臂,以擲彈帶投出的石頭,可摧毀敵方的城牆。

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