You are shipwrecked and floating in the middle of the ocean on a raft. Your cargo on the raft includes a treasure chest full of gold that you found before your ship sank, and the raft is just barely afloat. To keep you floating as high as possible in the water, should you (a) leave the treasure chest on top of the raft, (b) secure the treasure chest to the underside of the raft, or (c) hang the treasure chest in the water with a rope attached to the raft? (Assume throwing the treasure chest overboard is not an option you wish to consider.)
You are shipwrecked and floating in the middle of the ocean on a raft. Your cargo on the raft includes a treasure chest full of gold that you found before your ship sank, and the raft is just barely afloat. To keep you floating as high as possible in the water, should you (a) leave the treasure chest on top of the raft, (b) secure the treasure chest to the underside of the raft, or (c) hang the treasure chest in the water with a rope attached to the raft? (Assume throwing the treasure chest overboard is not an option you wish to consider.)
You are shipwrecked and floating in the middle of the ocean on a raft. Your cargo on the raft includes a treasure chest full of gold that you found before your ship sank, and the raft is just barely afloat. To keep you floating as high as possible in the water, should you (a) leave the treasure chest on top of the raft, (b) secure the treasure chest to the underside of the raft, or (c) hang the treasure chest in the water with a rope attached to the raft? (Assume throwing the treasure chest overboard is not an option you wish to consider.)
Archimedes' thrust is the vertical force oriented upwards experienced by a body immersed in a liquid (allowing it to float). This force corresponds to the weight of the volume of the displaced liquid. For example, a object immersed in water (density 1000 kg / m3 ) will undergo a flare of Archimedes of 9810 N for each cubic meter of its submerged volume (i.e. 9, 81 m / s2 1000 kg / m3 1 m3 = 9810 N).
A buoy is made from a steel tube 4 meters long and 0.5 radius meter to which we welded a half-sphere at each end. Knowing that the weight of the buoy is 3630 N say what will be the immersion height of this buoy if it is submerged in fresh water (density 1000 kg / m3 ).
Would it be possible for two different objects that have the same shape and the same mass, and one of the objects sinks while the other floats?
When holding a large quantity of inspired air in her lungs, a 22 kg girl has a body volume of 0.025 m³. Can she float in fresh water if g equals 9810 N/m³? Given her body volume, how much could she weigh and still be able to float?
Chapter 14 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
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