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Net horizontal force on a tank with two holes on opposite sides at a height difference

The same question, asked 2 times: 22 Apr 2025 S1*, 20 Apr 2026 S2. Every wording below, oldest first.

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  1. Question 1

    22 Apr 2025 S1

    23
    There are two identical small holes on the opposite side of a tank containing full of a liquid. The tank is open at the top. The difference in height between the two holes is ' hh '. As the liquid comes out of the two holes, the tank will experience a net horizontal force proportional to

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  2. Question 2

    20 Apr 2026 S2

    111
    On opposite sides of a wide vertical vessel filled with water (density ρ\rho), two identical holes are drilled, each having cross-section area AA. The height difference between holes is xx. The resultant force of reaction of water flowing out of vessel is (gg = acceleration due to gravity)

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