利用翹翹板解說平衡原理
塑膠台座：尺寸150×125mm
不鏽鋼平衡桿：尺寸300×35mm
附磁鐵粒及塑膠支持架二個，螺絲帽12個。
Used to demonstrate several basic principles such as torque, levers, center of gravity, and kinetic energy.
Consists of a plastic base, a 300× 35mm steel plate. Includes 12 screw nuts and 2 plastic supports.
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