Premise[]
Another Lonkitt calc for the popular series Warriors. Books about cats. Here's the text:
"Oakfur screeched and let go of Firestar. Firestar leaped to his paws and whipped around to grab Oakfur by the scruff. As he held Oakfur in his jaws, he kicked out with his powerful hind legs and sent the white warrior sprawling into the bracken. Then he flung Oakfur with all his might against a tree. Oakfur hit it with such force that the branches trembled and he fell to the ground, dazed."
Basically, Firestar, one cat, sent Oakfur, another cat, into a tree hard enough to shake it. This is just an approximation, of course- we don't have any values for "Vibrating" a material.
Calc[]
So, the trees. We need to know what kind they are. The feat occurred in this area. The closest match to the trees here is Abies cilicica.
Average height can reach about 80 feet, or 24.383 meters. Plugging this into ImageJ, we'll get a diameter of 1.19 meters. Trees are cylindrical, so... let's do that.
We get 1.08 x 10^9 cubic centimeters. We get a weight of 572400 kg when using the density of another Fir tree.
Let's assume some speeds. As a low-end, we'll try 1 m/s. For a high-end, we'll try 3 m/s. Both are pretty reasonable.
Low-End: 286.2 Joules, or Street level
High-End: 2575.8 Joules, or Street level
Tallies[]
Firestar Shakes a Tree (Low-End): 286.2 Joules, Street level
Firestar Shakes a Tree (High-End): 2575.8 Joules, Street level