Strange inertia

Hefei Science Museum Innovation Exhibits Deepening Design and Production Service Project Exhibition 4- Strange Inertia

Exhibition dimensions: approximately 2.0 x 0.7 x 1.1 meters (width x depth x height)

Knowledge points:

Inertia is an inherent property of an object, representing the difficulty of changing its motion state, manifested as the degree of impedance of the object to changes in its motion state. Its size is directly proportional to the mass of the object, and the larger the mass, the greater the inertia of the object. When the external force acting on an object is zero, inertia manifests as the object maintaining its motion state unchanged, that is, maintaining a stationary or uniform linear motion; When the external force acting on an object is not zero, inertia is manifested as the difficulty of the external force changing the motion state of the object.

Participation method:

Mechatronics interaction.

There is a straight track on the booth, and a transparent water tank is set on the track. In the water tank, two small balls of different weights are suspended by transparent thin ropes, with the heavy ball suspended by the upper rope and the light ball pulled by the lower rope. The two balls are exactly the same in appearance, at the middle height of the water tank. There is a handwheel below the track, and when the audience turns the handwheel to the limit position and releases it, the water tank starts to move in a straight line along the track, accelerating first and then decelerating. The audience can observe the phenomenon of the small balls in the water tank first gathering together and then separating to both sides.

Design and process requirements:

The exhibition items table body is made of Q235 sheet metal and the surface is treated with automotive paint.

The transparent water tank is made of tempered glass, with good sealing performance, no burrs or scratches on the surface, explosion-proof and wear-resistant, and the design considers the convenience of maintenance and unboxing.

The sliding mechanism is made of stainless steel material, with a smooth and defect free surface, rounded edges and corners, and equipped with damping, anti pinch, wear-resistant, anti-corrosion, and rust proof.

There are colored segmented prompts under the platform or track indicating whether the area is undergoing uniform acceleration or deceleration.

The ball has a bright color and will not be damaged by prolonged immersion in liquid.

Select a liquid with appropriate viscosity in the water tank, which will not rot, discolor, evaporate, or cause corrosion or discoloration of the tank or balls; It can ensure that the small ball has obvious separation and contraction phenomena due to uniform acceleration and deceleration during the demonstration process, and there will be no left or right shaking.