Pick a mass, release the drive weight, and it falls the marked 40 cm while the inner
cylinder spins up to a steady angular velocity. The stopwatch records the fall time. Do 3 trials for
each of the 6 masses, for both fluids — exactly as in the physical lab.
Raw Data
String drop length, L = 0.400 m · Room temp = 22 °C
Stopwatch: 0.00 s
Guided Data Analysis — you calculate, the tool checks
Collect all data first: 3 trials × 6 masses for
both Device A (castor oil) and Device B (motor oil). The analysis unlocks automatically.
0 / 36 trials
Virtual lab for CE 323 (Environmental & Fluids Laboratory), Boise State University · Dr. Sondra Miller.
Simulated data is generated from the governing viscometer physics so your worked calculations recover the true fluid
viscosity. Target reference values — castor oil ≈ 650 mPa·s, SAE 30 motor oil ≈ 440 mPa·s.