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I am trying to apply rigid body physics to objects but do not want them to fall down when the animation is playing. They should stay in their positions but react to other rigid bodies. Please refer to the video for an example. I wonder if something similar can be achieved in Blender. Thank you!!

https://www.youtube.com/watch?v=lZo8rFPOQ14

enter image description here

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  • $\begingroup$ If these RBs are already constrained to the central sphere, just set your gravity to 0. $\endgroup$
    – Nathan
    May 7, 2022 at 14:16
  • $\begingroup$ Thank you Nathan. That's seems to be an interesting solution. Let me try to experiment with constraints. $\endgroup$
    – subratabera
    May 8, 2022 at 6:48

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You can use rigid bodies and force fields:

enter image description here

Give your sphere a Physics > Rigid Body, Type > Passive, enable the Settings > Animated option. Create your small objects, give them Physics > Rigid Body, Type > Active. Create 2 Force Fields or more at the same position as the sphere, like for example a Force Field > Force and a Turbulence, parent them to the sphere. Give them highly negative Strenghts. Animate the sphere. In the Scene panel cut the Gravity option, and under Rigid Body World > Cache make the simulation begin before frame 0 and click on Bake.

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  • $\begingroup$ Amazing! This is a very interesting solution and it works too. Thank you very much @moonboots. $\endgroup$
    – subratabera
    May 7, 2022 at 11:04

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