Arrasto Nadador
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
arrasto água
About this calculator
This swim drag calculator helps to calculate the drag force exerted on a person's body while moving in water, based on the water density, swimmer velocity, and drag coefficient.
The calculation is performed using the formula F = ½ρv²CdA, where F is the drag force, ρ is the water density, v is the swimmer velocity, Cd is the drag coefficient and A is the body surface area in contact with the water.
This calculator is useful for swimmers who want to improve their efficiency and reduce drag in the water, allowing for better performance and less effort. Additionally, it is essential to consider the precautions to avoid overloading the body with excessive effort and preventing injuries.
Remember that regular practice and gradual adaptation to training are fundamental to avoid injuries and achieve positive results.
Frequently asked questions
What is the water density?
The water density varies with temperature, but at normal conditions, it is approximately 1,000 kg/m³. You can consider this value in your calculator.
What is the drag coefficient?
The drag coefficient (Cd) is a measure of the resistance to movement of an object in water. It depends on the type of object, speed, and shape. You can find approximate values for Cd of different objects in tables or graphs.
Why is it important to consider drag in water?
Drag is a force opposing the movement of the swimmer, increasing resistance and the energy needed to achieve a given speed. Reducing drag can improve efficiency and performance of the swimmer.
Can I use this calculator for other types of objects?
Yes, you can adapt the formula and calculator for other types of objects, as long as you have the necessary values for density, speed, drag coefficient, and surface area.
What should I do if I have any questions or problems with the calculator?
If you have any questions or problems with the calculator, please contact us. We will do our best to help you resolve the problem or clarify any questions.