Sparky is on the university speed ice skating team. When crossing the finish line Sparky wants to show off and come across the finish line on one skate with a velocity of 35 ft/sec (V). Sparky weighs 150 lbf. Sparky’s weight is supported by a thin liquid film of water melted by the pressure of the skate blade. If the blade is 13 inches long and 0.125 inches wide estimate Sparky’s deceleration resulting from viscous shear in a water film of thickness of 0.0000575 inches (h). Neglect all end effects. Evaluate all properties at 32°F. Suggest creating a simple schematic of the problem using V, h, and the viscous shear stress (not required).
Sparky is on the university speed ice skating team. When crossing the finish line Sparky wants to show off and come across the finish line on one skate with a velocity of 35 ft/sec (V). Sparky weighs 150 lbf. Sparky’s weight is supported by a thin liquid film of water melted by the pressure of the skate blade. If the blade is 13 inches long and 0.125 inches wide estimate Sparky’s deceleration resulting from viscous shear in a water film of thickness of 0.0000575 inches (h). Neglect all end effects. Evaluate all properties at 32°F. Suggest creating a simple schematic of the problem using V, h, and the viscous shear stress (not required).
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Sparky is on the university speed ice skating team. When crossing the finish line
Sparky wants to show off and come across the finish line on one skate with a velocity of 35
ft/sec (V). Sparky weighs 150 lbf. Sparky’s weight is supported by a thin liquid film of water
melted by the pressure of the skate blade. If the blade is 13 inches long and 0.125 inches wide
estimate Sparky’s deceleration resulting from viscous shear in a water film of thickness of
0.0000575 inches (h). Neglect all end effects. Evaluate all properties at 32°F. Suggest
creating a simple schematic of the problem using V, h, and the viscous shear stress (not
required).
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