# A thin 1.5-mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of 0.30 m/s relative to the other slide.

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A thin 1.5-mm coating of glycerine has been placed between two microscope slides of width 1.0 cm and length 4.0 cm. Find the force required to pull one of the microscope slides at a constant speed of 0.30 m/s relative to the other slide.

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Step 1

Given:

Distance between two microscopic slides (d) = 1.5 mm = 1.5×10-3 m

Dynamic viscosity (η) = 1.5 Ns/m2.

Width of slides (b) = 1.0 cm

Length of slides (l) = 4.0 cm

Speed (v) = 0.3 m/s

Step 2

Area of slides is,

Step 3

Force required to pul...

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