Fill in the Blanks Pulleys Online version Fill the gaps about pulleys with the suitable word. by Paco Soria 1 compound rope surface lifts chain cranes mechanism groove applying wells equipment movable axis A pulley is a wheel with a that turns on an . It is fixed to a solid . There is a or a inside the groove that allows you to lift objects easily by a force ( F ) against a resistance ( R ) . It allows us to lift and lower loads easily and is used in , simple and gym . Movable pulley This is a set of two pulleys , one fixed and another with linear movement . Compound pulley This is a special combination of fixed and pulleys . The more pulleys we have , the more complex the , but the easier it is to lift the load . Movable and pulleys can be used for and crane s