A balloon has mass of 10g in air. The air escapes from the balloon at a uniform rate with velocity 4.5 cm/s. If the balloon shrinks in 5s completely. Then, the average force acting on the balloon will be (in dyne).

Option 1 -

Option 2 -

Option 3 -

Option 4 -

4 Views | Posted 2 months ago

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1 Answer

Answered by

Vishal Baghel | Contributor-Level 10

2 months ago

Correct Option - 2

Detailed Solution:

$F t = m Δ v$

$? F ? = \frac{m Δ v}{t} = \frac{10 \times 1 0^{- 3} \times 4.5}{100 \times 5}$ 9 × 10^-4 N.

= 9 × 10^-5 N

= 9 dyne.

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