I am trying to figure out how much force i need to pull to drag an

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To determine the force needed to drag an object weighing 11-21 kg from a depth of 100-200 meters, both the object's weight and water resistance must be considered. The weight can be calculated using the mass multiplied by gravitational acceleration, while buoyancy is calculated based on the object's volume and water density. If the object is pulled vertically, the buoyant force should be subtracted from the total weight to find the net force required. Water resistance, or drag, varies with the object's shape and speed; for minimal force calculations, it can be neglected at low velocities. Understanding these principles will help in accurately calculating the required pulling force.
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I am trying to figure out how much force i need to pull to drag an object with a given surface 1634 square inch and weight from a given depth. Between 100 - 200 m 11-21kg psi. However I do not know how to use Newtons laws correctly in this senario. The object does not the to accelerate. Can you please help me to understand?

Thanks
 
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You need the volume, too, as it is relevant for buoyancy.
Do you pull it vertically? In this case, add the weight (mass of object * gravitational acceleration) and the water resistance, and subtract buoyancy (density of water * volume of object * gravitational acceleration).

Water resistance (drag) depends on your object and the velocity. If you want to calculate the minimal force required to lift the object (and if you are patient enough), ignore this part, the resistance will be very small if the velocity is small. For high velocities, this is the most important part.
 

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