diff --git a/Engine.h b/Engine.h
index 2aa6a30..58a8b2e 100644
--- a/Engine.h
+++ b/Engine.h
@@ -78,6 +78,10 @@ class Engine
                 void setMass(dReal mass) { m_ode_object->setMass(mass); }
                 const float * getAABB() { return m_aabb; }
                 dBodyID getBody() { return m_ode_object->getBody(); }
+                void setGravityMode(bool enabled)
+                {
+                    m_ode_object->setGravityMode(enabled);
+                }
 
             protected:
                 void createManagedObject();
diff --git a/ag.cc b/ag.cc
index 20f0d6a..3dd6229 100644
--- a/ag.cc
+++ b/ag.cc
@@ -248,6 +248,8 @@ namespace ag
         lua_setfield(L, -2, "addTorqueRel");
         lua_pushcfunction(L, object::setColor);
         lua_setfield(L, -2, "setColor");
+        lua_pushcfunction(L, object::setGravityMode);
+        lua_setfield(L, -2, "setGravityMode");
         lua_pushcfunction(L, object::setTexture);
         lua_setfield(L, -2, "setTexture");
         lua_pushcfunction(L, object::setTextureScale);
@@ -1164,6 +1166,20 @@ namespace ag
             return 0;
         }
 
+        int setGravityMode(lua_State * L)
+        {
+            int argc = lua_gettop(L);
+            if (argc == 2 && lua_isboolean(L, 2))
+            {
+                Engine::Object * obj = getObject(L, 1);
+                if (obj != NULL)
+                {
+                    obj->setGravityMode(lua_toboolean(L, 2));
+                }
+            }
+            return 0;
+        }
+
         int setTexture(lua_State * L)
         {
             int argc = lua_gettop(L);
diff --git a/ag.h b/ag.h
index c159022..e2cbd6e 100644
--- a/ag.h
+++ b/ag.h
@@ -81,6 +81,7 @@ namespace ag
         int addTorque(lua_State * L);
         int addTorqueRel(lua_State * L);
         int setColor(lua_State * L);
+        int setGravityMode(lua_State * L);
         int setTexture(lua_State * L);
         int setTextureScale(lua_State * L);
         int getMass(lua_State * L);
diff --git a/tests/managed_objects.lua b/tests/managed_objects.lua
index 8173738..457af31 100644
--- a/tests/managed_objects.lua
+++ b/tests/managed_objects.lua
@@ -43,5 +43,8 @@ function key_down_event(key)
         init_obj(box)
         ag.createAMotor(0, box,
             { x = 0, y = 0, z = 1, vel = 10, fmax = 10 })
+        local x, y, z = box:getPosition()
+        box:setPosition(x, y, 2)
+        box:setGravityMode(false)
     end
 end