# Fisics box dropping

**URL:** <https://forum.kirupa.com/t/fisics-box-dropping/285714>\
**Category:** flash\
**Created:** [April 4, 2009, 5:20pm UTC](https://forum.kirupa.com/t/fisics-box-dropping/285714 "2009-04-04T17:20:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ruiganga](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/ruiganga/32/3679_2.png) [@ruiganga](https://forum.kirupa.com/u/ruiganga)\
**Post date:** [April 4, 2009, 5:20pm UTC](https://forum.kirupa.com/t/fisics-box-dropping/285714/1 "2009-04-04T17:20:45Z")

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HI

I want to do a simple animaion. Just want to drag a box up and when I drop it, i want the box to feel the gravity and falls.

The drag problem I’ve solved like this:

wave\_mc.addEventListener(MouseEvent.MOUSE\_DOWN, mouseDownHandler);  
wave\_mc.addEventListener(MouseEvent.MOUSE\_UP, mouseUpHandler);

function mouseDownHandler(evt:MouseEvent):void{  
var object = evt.target;  
object.startDrag();  
}

function mouseUpHandler(evt:MouseEvent):void{  
var obj = evt.target;  
obj.stopDrag();

}

Now I need to know where I should type the tweener function. Any advide?

Thanks