Pulley Dynamometer Fixed & Moving Pulley Physics Experiment DIY Science Educational Toys Kit

Features:
1. Happy and easy to learn 2. Exercise your children practical ability 3. Train your children observation capability, thinking and analytical skills

Learning Points: Fixed pulley, movable pulley concept Why the fixed pulley can not ?save effort , but movable pulley can save effort? ? Explanation: With movable pulley can save a ?half ?, fixed pulley is a lever arm, no save effort nor effortless, but it can change the direction of force. ? Package Included:
1 x Pulley Physics Experiment Kit

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