While at a field site, you accidentally drop a 10-cm long pencil into an oil-filled tube (diameter 1.2 cm) thak feeds an oil tank. The pencil accelerates quickly to its terminal velocity, at which point it has 75 cm remaining before it enters the tank. How many seconds will pass before the front end of the pencil begins entering the tank? Assume: • the pencil has diameter 1 cm and can be modeled as a cylinder the gap between the wall and the pencil is very small and can be approximated with a linear velocity profile. the pencil has a mass of 23 g. the pencil's velocity is constant throughout its 75 cm fall. • the oil's viscosity is 0.6 N s m 2
While at a field site, you accidentally drop a 10-cm long pencil into an oil-filled tube (diameter 1.2 cm) thak feeds an oil tank. The pencil accelerates quickly to its terminal velocity, at which point it has 75 cm remaining before it enters the tank. How many seconds will pass before the front end of the pencil begins entering the tank? Assume: • the pencil has diameter 1 cm and can be modeled as a cylinder the gap between the wall and the pencil is very small and can be approximated with a linear velocity profile. the pencil has a mass of 23 g. the pencil's velocity is constant throughout its 75 cm fall. • the oil's viscosity is 0.6 N s m 2
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:While at a field site, you accidentally drop a 10-cm long pencil into an oil-filled tube (diameter 1.2 cm) that
feeds an oil tank. The pencil accelerates quickly to its terminal velocity, at which point it has 75 cm remaining
before it enters the tank. How many seconds will pass before the front end of the pencil begins entering the
tank? Assume:
the pencil has diameter 1 cm and can be modeled as a cylinder
the gap between the wall and the pencil is very small and can be approximated with a linear velocity
profile.
• the pencil has a mass of 23 g.
the pencil's velocity is constant throughout its 75 cm fall.
the oil's viscosity is 0.6 N sm2
Round your answer to the nearest second.
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