Pulley block experiment demonstration frame

Abstract

The utility model discloses a pulley block experiment demonstration frame which comprises a demonstration board, a fixing frame, a pulley assembly and a metering assembly. The pulley assembly comprises a fixed pulley, a movable pulley and a traction rope, the metering assembly comprises a spring dynamometer and a weight, the rear end of the traction rope is connected with the weight or fixed on the demonstration board, the front end of the traction rope bypasses the fixed pulley and / or the movable pulley and is connected with the spring dynamometer, and the weight can be hung on the movable pulley; the demonstration board is provided with a plurality of demonstration areas, the fixed pulley and the movable pulley can be arranged in different demonstration areas independently or in a combined mode, each demonstration area is provided with height scale marks, and the height scale marks are used for contrasting the positions of the movable pulley and the weight. According to the embodiment of the utility model, through the arrangement of the demonstration board with the height scale marks, the relative positions of the pulley, the weight and the spring dynamometer can be accurately compared and referenced in the demonstration process of different pulley experiments, so that students can more intuitively understand and practice physical knowledge contained in the pulley experiments.

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