The two apples are different sizes and Professor Mac will explain that, despite this, both apples will hit the ground at the same time.
So for the drop of the apples from the launch pad, I determine the starting position of the apples, and then let the computer calculate the motion of the apples as they drop and bounce off the ground before coming to rest. However I have to create the keyframes which determine the flow of the story, and this includes the poses of Professor Mac and the movement of objects in the scene. In a ten minute Professor Mac video I have to generate fifteen thousand separate images and then stick them together to create the video! Fortunately the computer does most of the work. The animation sequence is just a number of stills which are played back in rapid sequence (25 images per second) to give a moving image, and the result is what we call video. So by using the rigid body simulation tools in Blender I can get the information on the position of the apples as they fall under the action of the gravity force. The weight of an object is the force due to the attraction of the object to Earth (the video will explain it in more detail). Rigid body simulation is where the computer calculates how objects (in this case the apples) move under the action of forces. It includes rigid body simulation and I’m using this to model the drop of the two apples under the action of gravity.
BLENDER PHYSICS DROP OBJECT SOFTWARE
It is an amazing piece of software and is free to use. I use the Blender software for modelling and animation. As I write this I can hear my computer rendering the first sequence of the animation as Professor Mac drops two apples from high up on the launch pad tower. I’m still working on my video which will explain Newton’s law of universal gravitation.
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