A load exactly at the per-step energy limit is accepted. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Per-step energy sets a maximum load
Available energy 12 joules over step length 2 metres can pay for load 6 newtons.
12/2=6
Equality is accepted
The load equals the maximum force, so the accepted bit is 1.