Ball on Rope is step by step-by-step tutorial on animating a
ball on rope. This tutorial assumes that the reader is having a
basic understanding of Maya toolbox and menu system.
The first step in animating ball on rope is to create 9 cubes with an equal distance between
each other as shown in the Figure 1. After this step you need to
make all the 7 cubes at the center to active rigid body and 2 cubes
at the end to Passive rigid body.
Boxes in red are active rigid bodies and boxes in green are
passive rigid bodies.
Figure 1. 9 cubes with equal distances.
Now the next step is to create a spring between each box with the
Stiffness - 50
After setting stiffness and damping enable Spring rest length.
Give a 'Rest Length' value of 2. Refer Figure 2.
Figure 2. Spring attributes
Next step is to, add gravity to the active rigid body
boxes (red boxes). Now play the time slider and stop it in a
position as shown in the Figure 3.
Figure 3. After playing time slider.
After that, in the front view port, draw a curve with CV curve tool
with 2 as the curve degree value as shown in Figure 4 with 9 CV’s.
Then the next step is to create cluster for each CV of the curve and parent each cluster
to the respective cubes as shown in the Figure 4, so that the curve
also starts acting like the boxes.
Figure 4. Cluster
Now you need to hide the boxes in a layer and create a sphere. After that attach the
sphere to the motion path and edit its graph as shown in the image
Figure 5. Motion path
Finally, play the time slider. You will get the final output as
show in Figure 6.