Black Newton Pendulum Physical Model Perpetual Motion Machine Balance Ball Toys

This Is An Interesting Toy And A Good Teaching Prop.

It Shows The Rules For Conservation Of Momentum And Energy.

It Is Not Only A Pendulum, But Also A Stress Relief Ornament.

This Represents People’S Pursuit Of Perfection.

It Is The Gift For Relatives, Friends, Teachers, Classmates And Lovers.

PRODUCT SPECIFICATIONS:

Material: Plastic + Metal Ball

Color: Black

Size: 13.5x11x13.5cm