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#1 2007-01-22 00:09:15

john99
New Member
Registered: 2007-01-21
Posts: 5

Pressure and Tension

A diver descends from a salvage ship to the ocean floor at a depth of 35 m below the surface. The density of ocean water is 1.025x10^3 kg/m^3.

a) Calculate the guage pressure on the diver on the ocean floor.

b) Calculate the absolute pressure on the diver on the ocean floor.

The diver finda a rectangular aluminum plate having dimensions
1.0m x 2.0m x 0.03m.  A hoisting cable is lowered from the ship and the diver connects it to the plate. The density of aluminum is 2.7x10^3 kg/m^3. Ignore the effects of viscosity.

c) Calculate the tension in the cable if it lifts the plate upward at a slow, constant velocity.

d) Will the tension in the hoisting cable increase, decrease, or remain the same if the plate accelerates upward at 0.05m/s^2? Justify your answer.

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#2 2007-12-14 08:13:55

dark_falcon3
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Registered: 2007-12-14
Posts: 3

Re: Pressure and Tension

you're a noob

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#3 2007-12-14 08:14:57

dark_falcon3
New Member
Registered: 2007-12-14
Posts: 3

Re: Pressure and Tension

pew pew pew pzpzpzpz

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#4 2007-12-14 08:18:30

CAA|#FTW
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Registered: 2007-12-14
Posts: 2

Re: Pressure and Tension

LOL, i agree.

#gg

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#5 2007-12-14 08:20:35

dark_falcon3
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Registered: 2007-12-14
Posts: 3

Re: Pressure and Tension

answerz for a iszzz 3.516e3 rep me now nuubz plox ty

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#6 2007-12-14 08:24:34

CAA|#FTW
New Member
Registered: 2007-12-14
Posts: 2

Re: Pressure and Tension

a) P=pgh = 351575 N/m^2 --> (1025(9.8)(35))
b)P=pgh = 351575 N/m^2 + 101300 = 452875 N/m^2
c)T = mg = 162(9.8) = 1587.6  (find m using p = Mass/Volume)
d) increase: just like in air, F=ma, when it accelerates, a downward force will be added according to Newton's laws.  In water there will be much greater resitance, but it can be neglected in this problem.

look, now you're a trained n00b, yay for you.

dark_falcon3 FTW

Last edited by CAA|#FTW (2007-12-14 08:27:05)

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