Joke Collection Website - Mood Talk - Physics of Grade Two, can you talk about pulley block? I haven't had a class before in the third grade of this year.
Physics of Grade Two, can you talk about pulley block? I haven't had a class before in the third grade of this year.
Knowledgepoints of pulley block:
Combining the knowledge points of the crown block and the moving pulley learned earlier ① When the crown block lifts the goods, the direction of the force can be different from the direction of the movement of the goods. This brings great convenience to the operation. ② When the moving pulley lifts the goods, the direction of the force is the same as that of the goods moving xt, but half of the force can be saved.
The pulley block combines the advantages of crown block and moving pulley, which can not only change the direction of force, but also use less force (1/n, where n is the number of rope strands).
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