Physics Animation Course | 3D Animation Course | Blender 3D Animation

Gravity in Blender plays a key role in simulating realistic physical behavior, especially when working with physics simulations such as cloth, soft body, or rigid body dynamics. Here’s how you can work with gravity in Blender:

Setting Up Gravity in Blender

1. Global Gravity Settings:

   • To control the global gravity that affects all physics simulations:
     • Go to the Properties Panel on the right side of the screen.
     • Click on the Scene Properties tab (it looks like a small cone and sphere).
     • Scroll down to find the Gravity section. Here, you can set the gravity value, which by default is set to -9.81 m/s² on the Z-axis, mimicking Earth’s gravity.

2. Adjusting Gravity for Individual Objects:

   • Sometimes, you might want to customize gravity for a specific object rather than using the global settings:
     • For Rigid Body Objects:
       • Select the object.
       • Go to the Physics Properties tab.
       • Under the Rigid Body section, you can find the "Field Weights" section where you can adjust the influence of gravity on this particular object.
     • For Cloth or Soft Body Simulations:
       • Select the object.
       • Go to the Physics Properties tab.
       • In the corresponding physics settings, you can also find the "Field Weights" section to adjust gravity's influence.

3. Simulating Zero Gravity or Different Gravity Conditions:

   • If you need to simulate a zero-gravity environment or a different gravity condition (like on the moon), you can adjust the gravity value in the global gravity settings or individually for each object by setting the gravity to 0 or adjusting the value accordingly.

4. Using Force Fields for Custom Gravity Effects:

   • You can use force fields to create custom gravity-like effects. For example, a Force force field can attract or repel objects in a specific direction.
     • Add a force field by pressing Shift + A > Force Field > Force.
     • Adjust the strength, direction, and falloff to create the desired effect.

Practical Example:

• Falling Objects Simulation:
  1. Create a plane and scale it up (this will act as the ground).
  2. Add a cube above the plane.
  3. Select the cube and go to the Physics Properties tab.
  4. Add a Rigid Body to the cube and make sure its type is set to Active.
  5. Add a Rigid Body to the plane as well, but set its type to Passive.
  6. Press Space or Play to see the cube fall due to gravity and land on the plane.

Would you like to know more about any specific aspect of using gravity in Blender?