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  • Block and tackle


  • Аudio


    Sit down on a chair and hold on tightly to the rope, lift yourself up and then gradually lower down.

    Have you already experimented with blocks and levers? By combining mobile and movable blocks we get a polyspast which allow you to gain in force equal to the loss in distance. The more number of separate blocks in the polyspast, the less force you need to apply.

    Do you think, is it possible to get the win in strength without losing in the distance?

    Try to determine what is the gain in force in this polyspast. In order to test your guesses consult with the guide.