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Question by SpankPack · Dec 15, 2016 at 10:30 PM · collisionrigidbody physics

How to fix jumping objects having rigidbody?

Make a floor with collider. Make two stacked cubes and attach a cylinder - like a tank cannon in the upper cube. Parent: Bottom cube --> top cube(smaller) --> cylinder. Make a script rotating the top cube (together with it's child cylinder like a cannon tower ) Play - observe. Add a rigidbody in the bottom cube with box collider. Play - observe. The whole thing starts jumping around or shoots out in oblivion regardless weight. (I have a film. 2 meg)

I have an excavator and would like to use rigidbody. But when I rotate upper part of the machine it shoots away. Most probably because some physics normals collide.

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