Which Rolls Faster
★Exhibit Content: Moment of Inertia ★Interaction: Mechanical Interaction ★Operation: Place the two wheels at the high ends of the two tracks respectively, then push the lever so that both wheels roll down simultaneously. ★Exhibit Description: The exhibit consists of a lever, two tracks of the same length and inclination angle, and two circular wheels of the same size and equal mass but different mass distribution. First, place the two wheels at the high ends of the two tracks respectively, then push the lever so that both wheels roll down simultaneously. Guess which wheel rolls faster? ★Scientific Principle: Upon careful observation, you will find that the wheel with mass distribution closer to the axis center rolls faster. Why? The reason is that the two wheels have different mass distributions, resulting in different moments of inertia. The closer the mass distribution of an object is to the axis center, the smaller the moment of inertia, and the easier it is to change its rotational state. Therefore, as the two wheels roll down the tracks from rest, the wheel with smaller moment of inertia rolls faster than the one with larger moment of inertia. Moment of inertia is an important parameter in scientific experiments, engineering technology, aerospace, electric power, machinery, instrumentation, and other industrial fields.
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- 0.9*0.6*1.1m · Style 1 0.9*0.6*1.1mDimensions (unit: m): 0.9*0.6*1.1m Brand: KexMall Model: PopsciCat-mechanics-127 1. Materials: ①Base: frame 2mm cold-rolled steel plate, enclosure 2.0mm cold-rolled steel plate with two-tone baked paint, rounded without sharp edges ②Tabletop: Kelesi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③Instruction sign: acrylic UV printing ④Maintenance door: 2.0mm cold-rolled plate with surface baked paint ⑤Tracks: transparent acrylic ⑥Release mechanism: 304 stainless steel ⑦Wheels: transparent acrylic + 304 stainless steel 2. Main configuration: None 3. Installation requirements: ①Power requirement: None ②Installation base: direct placement ③Entry passage: door frame size (width×height) ≧0.8m×1.8m, continuous turning interval in passage ≧1.8m ④Maintenance access: Not required
★Exhibit Content: Moment of Inertia ★Interaction: Mechanical Interaction ★Operation: Place the two wheels at the high ends of the two tracks respectively, then push the lever so that both wheels roll down simultaneously. ★Exhibit Description: The exhibit consists of a lever, two tracks of the same length and inclination angle, and two circular wheels of the same size and equal mass but different mass distribution. First, place the two wheels at the high ends of the two tracks respectively, then push the lever so that both wheels roll down simultaneously. Guess which wheel rolls faster? ★Scientific Principle: Upon careful observation, you will find that the wheel with mass distribution closer to the axis center rolls faster. Why? The reason is that the two wheels have different mass distributions, resulting in different moments of inertia. The closer the mass distribution of an object is to the axis center, the smaller the moment of inertia, and the easier it is to change its rotational state. Therefore, as the two wheels roll down the tracks from rest, the wheel with smaller moment of inertia rolls faster than the one with larger moment of inertia. Moment of inertia is an important parameter in scientific experiments, engineering technology, aerospace, electric power, machinery, instrumentation, and other industrial fields.
- 0.9*0.6*1.1m · Style 2 0.9*0.6*1.1mDimensions (unit: m): 0.9*0.6*1.1m Brand: KexMall Model: PopsciCat-mechanics-128 1. Materials: ①Base: frame 2mm cold-rolled steel plate, enclosure 2.0mm cold-rolled steel plate with two-tone baked paint, rounded without sharp edges ②Tabletop: Kelesi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③Instruction sign: acrylic UV printing ④Maintenance door: 2.0mm cold-rolled plate with surface baked paint ⑤Tracks: transparent acrylic ⑥Release mechanism: 304 stainless steel ⑦Wheels: transparent acrylic + 304 stainless steel 2. Main configuration: None 3. Installation requirements: ①Power requirement: None ②Installation base: direct placement ③Entry passage: door frame size (width×height) ≧0.8m×1.8m, continuous turning interval in passage ≧1.8m ④Maintenance access: Not required
★Exhibit Content: Moment of Inertia ★Interaction: Mechanical Interaction ★Operation: Place the two wheels at the high ends of the two tracks respectively, then push the lever so that both wheels roll down simultaneously. ★Exhibit Description: The exhibit consists of a lever, two tracks of the same length and inclination angle, and two circular wheels of the same size and equal mass but different mass distribution. First, place the two wheels at the high ends of the two tracks respectively, then push the lever so that both wheels roll down simultaneously. Guess which wheel rolls faster? ★Scientific Principle: Upon careful observation, you will find that the wheel with mass distribution closer to the axis center rolls faster. Why? The reason is that the two wheels have different mass distributions, resulting in different moments of inertia. The closer the mass distribution of an object is to the axis center, the smaller the moment of inertia, and the easier it is to change its rotational state. Therefore, as the two wheels roll down the tracks from rest, the wheel with smaller moment of inertia rolls faster than the one with larger moment of inertia. Moment of inertia is an important parameter in scientific experiments, engineering technology, aerospace, electric power, machinery, instrumentation, and other industrial fields.
- 1.2*0.6*1.1m 1.2*0.6*1.1mDimensions (unit: m): 1.2*0.6*1.1m Brand: KexMall Model: PopsciCat-mechanics-129 1. Materials: ①Base: frame 2mm cold-rolled steel plate, enclosure 2.0mm cold-rolled steel plate with two-tone baked paint, rounded without sharp edges ②Tabletop: Kelesi artificial stone, thickness ≥12mm, with flame-retardant board underneath ③Instruction sign: acrylic UV printing ④Maintenance door: 2.0mm cold-rolled plate with surface baked paint ⑤Tracks: transparent acrylic ⑥Release mechanism: 304 stainless steel ⑦Wheels: transparent acrylic + 304 stainless steel 2. Main configuration: None 3. Installation requirements: ①Power requirement: None ②Installation base: direct placement ③Entry passage: door frame size (width×height) ≧0.8m×1.8m, continuous turning interval in passage ≧1.8m ④Maintenance access: Not required
★Exhibit Content: Moment of Inertia ★Interaction: Mechanical Interaction ★Operation: Place the two wheels at the high ends of the two tracks respectively, then push the lever so that both wheels roll down simultaneously. ★Exhibit Description: The exhibit consists of a lever, two tracks of the same length and inclination angle, and two circular wheels of the same size and equal mass but different mass distribution. First, place the two wheels at the high ends of the two tracks respectively, then push the lever so that both wheels roll down simultaneously. Guess which wheel rolls faster? ★Scientific Principle: Upon careful observation, you will find that the wheel with mass distribution closer to the axis center rolls faster. Why? The reason is that the two wheels have different mass distributions, resulting in different moments of inertia. The closer the mass distribution of an object is to the axis center, the smaller the moment of inertia, and the easier it is to change its rotational state. Therefore, as the two wheels roll down the tracks from rest, the wheel with smaller moment of inertia rolls faster than the one with larger moment of inertia. Moment of inertia is an important parameter in scientific experiments, engineering technology, aerospace, electric power, machinery, instrumentation, and other industrial fields.
Review
Principle Display: ★★★★★ Interaction Effect: ★★★★ Ease of Installation: ★★★★★ Durability: ★★★★ Overall Rating: ★★★★