Question

A diver fully equipped to dive including a wetsuit weighs 185lb / 84kg and displaces 3 ft3 / 85 liters of water. What amount of weight does the diver need to add to be neutrally buoyant in 33ft / 10m of seawater?

1) 7lbs/3 kg
2) 22lbs/10.1 kg
3) 64lbs/29 kg
4) 32lbs/14.5 kg

Answer 1

The diver needs to add 64lbs/29kg of weight to be neutrally buoyant in 33ft/10m of seawater.

Step-by-step explanation:

According to Archimedes' principle, the weight of water displaced by an object is equal to the buoyant force acting on the object. In this case, the weight of water displaced by the diver's body is 1.3x10^7 Newtons.

To be neutrally buoyant in seawater, the diver needs to add enough weight to counteract the buoyant force. The weight needed can be calculated by dividing the buoyant force by the acceleration due to gravity.

The correct answer is option 3) 64lbs/29kg.