A cylindrical tank stands on a frictionless surface. The seal over a circular hole of radius 0.5 cm in the wall of the tank ruptures when the level of water above the hole is 1 metre. The force that a person must apply on the cylinder to keep it from being set in motion is

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Solution

The correct option is C

F = a $v^{2}$ ρ

= $\frac{22}{7}$ × 0.5 × 0.5 × 2 × 980 × 100 × 1 dyne

= 1.54 × $10^{5}$ dyne = 1.54N

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A cylindrical tank stands on a frictionless surface. The seal over a circular hole of radius 0.5 cm in the wall of the tank ruptures when the level of water above the hole is 1 metre. The force that a person must apply on the cylinder to keep it from being set in motion is

The correct option is C F = av2ρ = 227 × 0.5 × 0.5 × 2 × 980 × 100 × 1 dyne = 1.54 × 105 dyne = 1.54N

The correct option is C

F = a $v^{2}$ ρ

= $\frac{22}{7}$ × 0.5 × 0.5 × 2 × 980 × 100 × 1 dyne

= 1.54 × $10^{5}$ dyne = 1.54N