/sci/ - Science & Math

i have to do physics lab online, so it can be hard for me to guage uncertainties and stuff since everything is technically a supplied measurement (i.e, no uncertainty).

but today I have this thing, which spins when it is hit with a piston and we move the purple objects to adjust the rotational inertia and therefore acceleration. my question relates to the uncertainties present:

I place the objects along the axis, so I assume it's proper to assign some uncertainty value, say [math]\pm 0.01[/math]m. If I knew radius of this circle I could get the circumference, and apply some of that uncertainty to the angular speed value, but I can't. so now considering the speed value, I thought some appropriate uncertainties might be randomly applying something like [math]\pm 0.1^{\circ}[/math] and [math]\pm 0.1[/math]s (seconds).

does any of this make sense, or am I best to have no uncertainties in this situation? my prof is a bit of a stickler for them.