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Question by armandaneshvar99 · Feb 05, 2018 at 02:40 AM · gravitymaterialssphereplaneroll a ball

RIgidbody sphere falls through plane

Let's start off by saying that I am a total beginner in unity. I just started with the 'roll a ball' project. One problem that I am having is that my ball/sphere keeps fallig through the ground/plane. Does anyone know how I can solve this? They don't seem to say anything about this in the turtorials.

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Answer by matkoniecz · Feb 24, 2020 at 01:25 PM

For me adding "sphere collider" component fixed exactly this problem during following the tutorial.

Not sure why rigid body was not enough.

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Answer by wanyanhaoyan · Oct 29, 2020 at 06:13 AM

I had exactly the same problem, and it turns out that I didn't check the plane collider. My problem was solved only by fixing the plane collider, but if "the ball may fall off from the plane" does not matter so much, checking sphere -> rigidbody -> constraints -> freeze position Y will lock the ball in the same height while unchecking sphere -> rigidbody -> use gravity removes the whole "falling down" thing.

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