![]() This way we can simulate effects like buoyancy, bubbles going up in the water and so forth. ![]() If I turn around and face the sphere from the bottom up, and press Play, you will see that the sphere is falling upwards. Which is exactly the opposite of plus 1000. The other thing we can actually do is put a negative number here. So it's basically, it's accelerating by 25 centimeters by seconds squared. If I go to my Project Settings > Dynamics > General > Gravity, if I change this to 25 and press Play, you will see that the sphere accelerates, but a much slower rate. So, this is the current acceleration because of the global gravity force. So, let me get rid of the floor, so we can see that sphere falling for a bit more. The good thing is that we can change this. That is nothing more than rounding up of 981 centimeters by second squared which is the gravity acceleration of the earth at the equator. Currently, and by default, it's set to 1,000 centimeters. In the Project Settings, the Dynamics tab, General sub-tab, and down here you can see it says Gravity. In order to access this global gravity setting, we have to go to the Edit menu, and bring up the Project Settings. Change the display, just for clarity, and press Play. I will lift my sphere just above the horizon. I'll create a sphere, right click, go to the Simulation tags sub-menu and add a rigid body. Gravity always pulls the object towards the minus Y axis, downward, so to speak. If you have unique body proportions and do not fit comfortably in the 4DX chair, please ask the attendant at the theater for further guidance.There is one main force present by default in Cinema 4D's dynamic system, and that is global gravity.
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