Question
Asked Dec 23, 2019
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The block of ice (temperature 0°C) shown in Figure P9.53 is
drawn over a level surface lubricated by a layer of water 0.10
mm thick. Determine the magnitude of the force F needed to
pull the block with a constant speed of 0.50 m/s. At 0°C, the
viscosity of water has the value 7 = 1.79 × 10-³ N · s/m².
A1.20 m–
0.800 m
0.10 mm
Figure P9.53
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The block of ice (temperature 0°C) shown in Figure P9.53 is drawn over a level surface lubricated by a layer of water 0.10 mm thick. Determine the magnitude of the force F needed to pull the block with a constant speed of 0.50 m/s. At 0°C, the viscosity of water has the value 7 = 1.79 × 10-³ N · s/m². A1.20 m– 0.800 m 0.10 mm Figure P9.53

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(1.79 × 10*N - s/m²)(0.800m× 1.20 m)(0.50 m/s) 10-³m 0.10mm Imm = 8.59 x 10°N

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