# Make box stationary after it falls down from a certain height (PhysicsBody)

**URL:** <https://forums.kodeco.com/t/make-box-stationary-after-it-falls-down-from-a-certain-height-physicsbody/93882>\
**Category:** ARKit by Tutorials\
**Created:** [January 8, 2020, 9:41am UTC](https://forums.kodeco.com/t/make-box-stationary-after-it-falls-down-from-a-certain-height-physicsbody/93882 "2020-01-08T09:41:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![akashlal](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/akashlal/32/103097_2.png) [@akashlal](https://forums.kodeco.com/u/akashlal)\
**Post date:** [January 8, 2020, 9:41am UTC](https://forums.kodeco.com/t/make-box-stationary-after-it-falls-down-from-a-certain-height-physicsbody/93882/1 "2020-01-08T09:41:54Z")

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Hi,  
I made a demo app which places a plane on ground, adds a grey png material, and when I tap on that plane, boxes fall on it with physics.

VIDEO - [AR Boxes](https://cl.ly/c11e8a)

However,

1. When box dimensions are small, it keeps bouncing and circling.
2. When one box lands on another box, the first box falls down the ground despite there being a plane with a different category bit mask below it.

Could you direct me towards possible solutions?

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**Author:** ![shogunkaramazov](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/shogunkaramazov/32/108826_2.png) [@shogunkaramazov](https://forums.kodeco.com/u/shogunkaramazov)\
**Post date:** [March 27, 2020, 2:38pm UTC](https://forums.kodeco.com/t/make-box-stationary-after-it-falls-down-from-a-certain-height-physicsbody/93882/2 "2020-03-27T14:38:48Z")

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@akashlal Do you still have issues with this?

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<div class="post-metadata">

**Author:** ![akashlal](https://assets.chunter.kodeco.com/user_avatar/forums.kodeco.com/akashlal/32/103097_2.png) [@akashlal](https://forums.kodeco.com/u/akashlal)\
**Post date:** [March 27, 2020, 3:49pm UTC](https://forums.kodeco.com/t/make-box-stationary-after-it-falls-down-from-a-certain-height-physicsbody/93882/3 "2020-03-27T15:49:11Z")

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Yeah, I still have that issue.  
When the geometry is too small, it keeps vibrating, and objects on a plane also fall through sometimes, when another object is dropped on it.