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  • A balloon of volume and weighing <img alt="1650 \math

A balloon of volume 1500 \mathrm{~m}^{\wedge} 3 and weighing 1650 \mathrm{~kg} with all its equipment is filled with helium (density 0.2 \mathrm{~kg} / \mathrm{m} 3 ). If the density of air is 1.3 \mathrm{~kg} / \mathrm{m}^{\wedge} 3, the pull on the rope tied to the balloon will be

Option: 1

Zero
 


Option: 2

300 \mathrm{~kg}


Option: 3

16.5 \mathrm{~kg}


Option: 4

1950 \mathrm{~kg}


Answers (1)

best_answer

Force balance,

\mathrm{ \begin{aligned} \text { Pull } & =1500 \times 1.3 \times 10-1500 \times 0.2 \times 10-1650 \\ & =16500-16500=0 \end{aligned} }

Posted by

Ritika Jonwal

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