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How to make an animation of a dropping object with the acceleration of -9.8 m/s^2 using 3D max?
show user profile  Opener
Hi all,

   I have make an animation of a dropping ball (normal ball) with the acceleration of 9.8 m/s^2 and initial velocity of 0 using MassFX in 3dmax before. Now I want to make a dropping ball (abnormal ball) with the acceleration of -9.8 m/s^2(the deceleration of 9.8 m/s^2) using 3dmax. The initial velocity of the abnormal ball is equal to the end velocity of the normal ball and it's direction is same with the normal ball.  I had intended to do this by changing the Acceleration Value of Scene Settings in MassFX Tools dialog (changing the value 981 to -981). However, changing the Acceleration Value changes the motion direction of that ball unexpectedly and the minus seems to represent the direction of motion in Scene Settings of MassFX Tools dialog.

Do you know how to make an animation of a dropping ball with the acceleration of -9.8 m/s^2 (the deceleration of 9.8 m/s^2) using MassFX?

Any answers will be very appreciated.

Thank you!

read 404 times
12/9/2016 7:24:59 PM (last edit: 12/9/2016 7:24:59 PM)
show user profile  Garp
Maybe animate normally and mirror the keys in the curve editor (?).

read 398 times
12/9/2016 7:31:41 PM (last edit: 12/9/2016 7:36:50 PM)
show user profile  c0
Use Gravity by Force Object and bind to a space warp. By rotating the space warp you can change direction.

read 392 times
12/9/2016 8:52:37 PM (last edit: 12/9/2016 8:52:37 PM)
show user profile  Pil
You cannot just put an - sign in front of acceleration and expect deceleration.
The opposite of acceleration in 9,8m/s^2 is 0 not -9,8m/s^2.

Acceleration is due to the gravitational force (as you know) but deceleration is not.
That's due to something blocking the path of the falling object.

So I suggest that you look at you problem differently and therefore look for a different solution.

But if you just need to fake this then just make the forward animation and then reverse the sequence after.

read 362 times
12/12/2016 8:37:38 AM (last edit: 12/12/2016 8:39:31 AM)
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