Parallelogram law demonstrating instrument

Abstract

The invention discloses a parallelogram law demonstrating instrument which comprises a bottom plate and a vertical plate fixed to one side of the bottom plate, wherein a drawing is fixed to the top of the vertical plate through a square clamp, a hanging end of an S-shaped tension sensor is fixed to the middle of a hanging plate, two ropes are connected to a measuring end of the S-shaped tension sensor, hangers are arranged at the tail ends of the two ropes respectively, a slide way with the extension direction consistent with that of the hanging plate is arranged in the middle of the vertical plate, two pulleys capable of moving left and right along the slide way are fixed onto the slide way through pin shafts, one end of each pin shaft penetrates the vertical plate and is locked by a nut, the two ropes are wound on the pulleys respectively, and weights are arranged on the hangers at the tail ends of the ropes. The parallelogram law demonstrating instrument has the advantages of convenience in use, novel structure and high accuracy.

Description

technical field [0001] The invention belongs to the technical field of practical teaching aids for physics teaching, and in particular relates to a demonstration instrument for the law of parallelogram used in middle school physics teaching. Background technique [0002] In the part about the decomposition and synthesis of force in the basic knowledge of high school physics, ordinary textbooks generally use the decomposition method of XY axis to explain the calculation of component force and resultant force. Decomposition force is to better solve the calculation of some forces that cannot be directly solved. This original intention brings certain difficulties to the decomposition of students' comprehension. They cannot be directly imagined or observed directly. Continuity is not conducive to in-depth study of basic physical knowledge, and the advancement of modern technology has brought the possibility of directly demonstrating the decomposition and synthesis of forces. Co...

AI Technical Summary

Problems solved by technology

Decomposition force is to better solve the calculation of some forces that cannot be directly solved. This original intention brings certain difficulties to the decomposition of students' comprehension. They cannot be directly imagined or observed directly. Continuity is not conducive to in-depth study of basic physical knowledge, and the advancement of modern technology has brought the possibility of direct demonstration of the decomposition and synthesis of forces

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