Viscosity: A flat horizontal plate of area 400 cm² is dragged over a 0.20 cm thick layer of oil at a speed of 30.0 cm/s. The oil is resting on a fixed horizontal surface. It takes a force 1.20 N applied to the plate to sustain this speed. What is the viscosity of the oil? A) 6.00 kg/m ∙ s B) 20.0 kg/m ∙ s C) 60.0 kg/m ∙ s D) 0.200 kg/m ∙ s E) 200 kg/m ∙ s

Question

Quizplus · Accepted Answer

The viscosity η can be calculated using the formula η = (F * d) / (A * v), where F is the force, d is the thickness of the oil layer, A is the area, and v is the velocity. Substituting the given values: η = (1.20 N * 0.002 m) / (0.04 m² * 0.30 m/s) = 0.200 kg/m ∙ s.

Viscosity: a Flat Horizontal Plate of Area 400 Cm2 Is

Viscosity: a Flat Horizontal Plate of Area 400 Cm² Is