I'm new to Blender and I'm making a simple animation and I want an object to stand on plane. I have a plane aligned with 0 on z-axis with passive rigid body. I placed an object on the plane so that the bottom lines up with z=0, but when I add the active rigid body to the object in the first couple frames it falls slightly below the plane and stops there(around -0.1), instead of stopping on the plane. It's as if Blender was thinking that my plane is at -0.1 but it's at 0. I applied all the transforms to both the object and the plane. Any idea why is that happening and how to fix it?
To make your bowling pin stand on the ground, simply activate Collision Margin under the Rigid Body Properties > Sensitivity and set it to 0. You can do this additionally for the floor as well, but it's not necessary (note: enabling it only for the floor and not the pin doesn't help).
By the way: the face normals of your pin are pointing inwards, to correct it go into Edit Mode, select all by pressing A, then Shift+N to Recalculate Normals. (But this is not the reason for the rigid body behaviour).