The utility model discloses a pendulum ball is motion laws demonstration appearance in vertical plane, characterized by: assemble simple pendulum, background frame, touching induction system become and can carry out the multiple pendulum ball is motion laws demonstration appearance in vertical plane who probes the experiment, wherein, the background board on be equipped with portable adjustable touching induction system, the touching induction system be equipped with with background board eaves mouth assorted slider, realize the slider ride on the background board eaves mouth fixed with the function of sliding and shifting one's position, be equipped with on the slider and take out the hole, the regulatory function of pole length realizes taking out, the touching induction system in the pole upper end of taking out be equipped with the locator card, realize the fastening function to taking out the pole, the touching induction system in be equipped with the movable block, the movable block be the light fritter, and turn over the board and mate, realize the response function to the external force touching. The utility model discloses a pendulum ball motion laws's in vertical plane research is carried out to the emphasis, carries out the conservation of mechanical energy experiment from a plurality of angles, improves the experiment effect, and adding user experiences.