GATE ME 2014 Set 2 — Question 51

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NAT+2 / -0HardBuoyancy & StabilityFluid Properties & StaticsFluid MechanicsIdeal & Real Gas BehaviourLaws & PropertiesThermodynamics

Fluid Mechanics → Fluid Properties & Statics → Buoyancy & Stability

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Question

A spherical balloon with a diameter of 10 m10 \text{ m}, shown in the figure below is used for advertisements. The balloon is filled with helium (RHe=2.08 kJ/kg.KR_{He} = 2.08 \text{ kJ/kg.K}) at ambient conditions of 15C15^\circ\text{C} and 100 kPa100 \text{ kPa}. Assuming no disturbances due to wind, the maximum allowable weight (in newton) of balloon material and rope required to avoid the fall of the balloon (Rair=0.289 kJ/kg.KR_{air} = 0.289 \text{ kJ/kg.K}) is _______
spherical balloon diagram
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