GATE XE · 2021 · XE-B
Question 11: External Flows
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Question 11
XE-BMCQ2 marksNeeds review
A spherical metal ball (of density
and diameter
), attached to a string, is exposed to a crossflow (of velocity
) of a viscous fluid (of viscosity
and density
). Due to the crossflow, the string makes an angle of inclination,
, with the top surface as shown in the figure. The acceleration due to gravity is denoted by
. For this flow, Reynolds number,
and buoyancy force in the fluid is negligible compared to viscous force. Assuming the string to be weightless and offering negligible drag, the expression for
is 
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2021XE-B
GATE XE 2021 · Paper 1
Engineering Sciences · Original paper archive
- Section
- Section XE-B
- Question type
- Multiple choice (MCQ)
- Marks
- 2 marks
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