Which Is More Effort-Saving
★Exhibit Content: Popular science on the labor-saving principle of pulley systems ★Interaction: Multi-group pulley comparison interactive device ★Operation: Visitors pull the handle and observe the lifting and lowering of counterweights under different pulley combinations, compare the changes in pulling force corresponding to different rope winding methods and numbers of pulleys, and feel the difference in labor-saving effects. ★Exhibit Description: The exhibit consists of a display frame, multiple fixed/movable pulley systems, counterweights, ropes, and an operating handle. Through different combinations of fixed pulleys (changing the direction of force) and movable pulleys (labor-saving), it intuitively demonstrates the mechanical characteristics of pulley systems: the more movable pulleys, the more rope segments bearing the weight, and the smaller the required pulling force. The exhibit uses comparative interaction to let visitors personally experience the labor-saving effects of different pulley systems, understand the application of simple machines in daily life, and is suitable for science popularization displays in science and technology museums, youth activity centers, and physics science exhibition areas. ★Scientific Principle: This exhibit is based on the labor-saving principle of pulley systems: A fixed pulley is essentially an equal-arm lever, which does not save labor but can change the direction of force; a movable pulley is essentially a labor-saving lever, which can save half the force; the labor-saving multiple of a pulley system is determined by the number of rope segments bearing the weight; through different pulley combinations, the exhibit allows visitors to intuitively verify the relationship between the number of rope segments and the labor-saving effect, and understand the working mechanism of simple machines.
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- 3.2×1.2×2.5 3.2×1.2×2.5Dimensions (unit: m): 3.2×1.2×2.5 Brand: KexMall Model: PopsciCat-mechanics-178 1. Materials ① Display frame: cold-rolled steel plate with surface baking paint; acrylic decorative panel, stable structure. ② Interactive device: movable pulleys, fixed pulleys (high-strength engineering plastic/stainless steel); wear-resistant and anti-slip rope; counterweights (cast iron covered with environmentally friendly plastic); high-precision bearings; aluminum plate; stainless steel rotating shaft; one-way damper; safety buckle. ③ Description board, graphic panel: acrylic UV printing, including operation instructions and mechanical principle explanation. 2. Main Configuration ① Core demonstration components: multiple fixed and movable pulley combination systems, including demonstration units for different rope winding methods. ② Auxiliary configuration: force-sensing handle, one-way damper (controls smooth lifting and lowering of counterweights), safety buckle (anti-rope-slip protection). 3. Exhibition Requirements ① Energy requirement: None. ② Installation foundation: place directly, require flat and solid ground, ground reinforcement recommended. ③ Entry passage: door frame size (width×height) ≥2.5m×2.8m, continuous turning interval ≥3m. ④ Maintenance passage: Not required
★Exhibit Content: Popular science on the labor-saving principle of pulley systems ★Interaction: Multi-group pulley comparison interactive device ★Operation: Visitors pull the handle and observe the lifting and lowering of counterweights under different pulley combinations, compare the changes in pulling force corresponding to different rope winding methods and numbers of pulleys, and feel the difference in labor-saving effects. ★Exhibit Description: The exhibit consists of a display frame, multiple fixed/movable pulley systems, counterweights, ropes, and an operating handle. Through different combinations of fixed pulleys (changing the direction of force) and movable pulleys (labor-saving), it intuitively demonstrates the mechanical characteristics of pulley systems: the more movable pulleys, the more rope segments bearing the weight, and the smaller the required pulling force. The exhibit uses comparative interaction to let visitors personally experience the labor-saving effects of different pulley systems, understand the application of simple machines in daily life, and is suitable for science popularization displays in science and technology museums, youth activity centers, and physics science exhibition areas. ★Scientific Principle: This exhibit is based on the labor-saving principle of pulley systems: A fixed pulley is essentially an equal-arm lever, which does not save labor but can change the direction of force; a movable pulley is essentially a labor-saving lever, which can save half the force; the labor-saving multiple of a pulley system is determined by the number of rope segments bearing the weight; through different pulley combinations, the exhibit allows visitors to intuitively verify the relationship between the number of rope segments and the labor-saving effect, and understand the working mechanism of simple machines.
Review
Principle Display: ★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★ Durability: ★★★★ Overall Rating: ★★★★