Product Name: Flag-Raising and Lowering Platform

Product Code: KX825

Size: 10*11*42cm

Package: Packaging Bag

Packing Quantity: 500 PCS

Box Size: 60*40*55 CM

In the current junior high school physics textbook, the teaching of the pulley uses the principle of equivalent lever to demonstrate experimental facts, which is a very good teaching material, deepening the students' understanding and connection of knowledge. In order to make teaching and learning closely synchronized, we have developed a pulley lever principle demonstration device in teaching, and now introduce it to you. I. Design Idea On the actual pulley, the actual object shows its equivalent lever.

The Principle of Flag-Raising and Lowering Platforms Presentation
In the current junior high school physics textbook, the teaching of the pulley uses the principle of equivalent lever to demonstrate experimental facts, which is a very good teaching material, deepening the students' understanding and connection of knowledge. In order to make teaching and learning closely synchronized, we have developed a pulley lever principle demonstration device in teaching, and now introduce it to you. I. Design Idea On the actual pulley, the actual object shows its equivalent lever.
The purpose of the experiment: Since the pulley and the lever are equivalent in their effect, their working principles are the same. They both have a pivot point, a force, a resistance, a force arm, and a resistance arm, and both are simple machines that follow the principle of work. The only difference is that the pivot point of the pulley can be on the axis, on the wheel, or even moving, and the shape can be different. However, in terms of their effect, they are equivalent, so it can be said that the pulley is also a lever.

1. Experiment preparation: familiarize yourself with the experiment equipment: fixed pulley, base, pole, pulling rope, red flag.
Experiment Report:
The center axis of a fixed pulley remains stationary. The function of a fixed pulley is to change the direction of the force, but it cannot reduce the effort. When pulling a heavy object,
You can use a fixed pulley to change the direction of the force applied to make it easier to exert. When using a fixed pulley, the distance pulled by the force is equal to the distance the object rises, and it is neither more nor less effort. The tension in the rope is equal on both ends, so the output force is equal to the input force. Without considering friction, the mechanical efficiency of the fixed pulley is close to 1.