At fixed spin rate, radius linearly changes the training acceleration. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
Two metres at the same rate gives eight acceleration units
Hold spin rate at 2 per second. Radius 2 m gives acceleration 8 metres per second squared.
a=u2r=22⋅2m=8m/s2
Three metres gives twelve acceleration units
With the same rate, radius 3 m gives acceleration 12 metres per second squared. The acceleration arrow is checked from the exact product.
a=u2r=22⋅3m=12m/s2
Four metres gives sixteen acceleration units
Radius 4 m gives acceleration 16 metres per second squared. This is a training acceleration model, not sedimentation chemistry.