Magnetic sheet type horizontal projectile motion demonstration instrument

A magnetic sheet type horizontal projectile motion demonstration instrument relates to teaching aids and comprises a magnetic ball (1), a standing plate (2), a magnetic sheet display screen (3), a screen renewing device (4), a slideway (5) and a leveling device (6), wherein an inlay groove (7) and a sliding chute (8) are formed on the front side of the standing plate (2), the sliding chute (8) ispositioned above the inlay groove (7), the magnetic sheet display screen (3) is embedded in the inlay groove (7) on the front side of the standing plate (2), the screen renewing device (4) is arrangedbetween the magnetic sheet display screen (3) and the standing plate (2), the holding part (10) of the screen renewing device (4) is positioned in the sliding chute (8), the slideway (5) is fixed atthe upper side part of the magnetic sheet display screen (3), the leveling device (6) comprises a leveling support angle (11) and a plumb line (12), the leveling support angle is distributed in the shape of a triangle and fixed