A balloon of volume $1500{{\rm{m}}^3}$ and weighing 1650 kg with all its equipment is filled with He (density$0.2{\rm{kg}}{{\rm{m}}^{ - 3}}$. If the density of air be $1.3{\rm{kg}}{{\rm{m}}^{ - 3}}$, the pull on the rope tied to the balloon will be

NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Medium

1 of 1

Application +4 | -1

A balloon of volume

1500{\mathrm{m}^3}

and weighing 1650 kg with all its equipment is filled with He (density

0.2\mathrm{kg}{\mathrm{m}^{ - 3}}

. If the density of air be

1.3\mathrm{kg}{\mathrm{m}^{ - 3}}

, the pull on the rope tied to the balloon will be

View answer and explanation

Correct option: D

Zero

Option D (Zero) is correct. The buoyant force balances the weight of the balloon and its equipment, resulting in no net force and thus no pull on the rope.

More Questions from MECHANICAL PROPERTIES OF FLUIDS

Practice All Chapter MCQs →

With the increase in temperature viscosity of a liquid - Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion A: When you squeeze one end of a tube to get toothpaste out from the other end, Pascal's principle is observed.

Reason R: A change in the pressure applied to an enclosed incompressible fluid is transmitted undiminished to every portion of the fluid and to the walls of its container.

In the light of the above statements, choose the most appropriate answer from the options given below. Hydraulic lifts and hydraulic brakes are based
on As the temperature of a liquid is raised, the coefficient of viscosity A horizontal pipe of cross-sectional diameter 5 cm carries water at velocity of

4\mathrm{m}{\mathrm{s}^{ - 1}}

. The pipe is connected to a smaller pipe with a cross-sectional diameter 4 cm. the velocity of water through the smaller pipe is If two soap bubble of different radii are connected by a tube