Hi , the answer is December 31st around 10;30pm.
Myelin sheath. It is a layer of lipids produced by Schwaan cells around the axon of neurons. The sheath increased the rate of electric impulse transmission through the axon, several folds. This process is called saltatory conduction where impulse ostensibly hops from a node to another.
Fnet=0 ( T+B-W=0 ( T=W-B = 1.08 – 0.4 = 0.68 N