1 / 12

QUESTIONS

QUESTIONS. Buoyancy. F b =  f V o V o submerged volume of object. Examples. Car ferry: (25x300) ft 2 ; 60 cars, each weighs 3000lbf. Depth of submergence? 50gal empty drum an aid to lift anchor weighing 400lbf. Submerged in seawater 64 lbf / ft 3 . Force supplied by diver?.

tab
Télécharger la présentation

QUESTIONS

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. QUESTIONS

  2. Buoyancy • Fb = f Vo • Vo submergedvolume of object

  3. Examples • Car ferry: (25x300) ft2 ; 60 cars, each weighs 3000lbf. Depth of submergence? • 50gal empty drum an aid to lift anchor weighing 400lbf. Submerged in seawater 64 lbf / ft3. Force supplied by diver?

  4. Examples • Hydrometer sinks 5.3cm into water at 15oC . Bulb displaces 1.0cc; stem area 0.1cm2. Hydrometer weight?

  5. Homework • Concrete block at 100lbf in air and 60lbf in water; what is  of block? • Rectangular pontoon has width = 6m, length = 12m, and draught = 1.5m. In fresh water. What is weight? Draught in water at 1025 kg / m 2 ? Load supported in fresh water?

  6. Homework • A gate for the spillway holds water at a normal high level mark. The spillway crest elevation is 2090.0 ft. The gate span is 30 ft. What is the force on the two pins holding the gate in place?

  7. Homework • The air above the liquid is at 40psig. The SG of the liquid is 0.8. The rectangular gate is 1.0m wide; y1 = 1.0m; and y2 = 3m. What force P is needed to hold gate in place?

More Related