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indicating that the device is working normally
it can be attached to the wall which helps to save space
[Adjustable Arm and 360°Rotation] The adjustable arm can be rotated 360 degrees for various optimal positions without hindering your driving
but very practical in use
Newtons Cradle Pendulum Balance Ball Physical Experiment Educational Toy Gift Color:White indicating that the device isNewtons Cradle Pendulum Balance Ball Physical Experiment Educational Toy Gift This product demonstrates the principles of Conservation of Energy. It is suitable for children to experience the fun of mechanics in the process of playing this fun tool. Pulling back one or more of the balance balls, then release them, the same number of balls will swing up on the opposite side. Name: Newton Cradle Product Material: ABS Plastic Product Principle: Energy