The bottom of a flat-bottom aluminum boat has an area = 4 m2 and the mass of the boat is 65 kg.?

Nov 26, 2007 by Zeezee | Posted in Physics

The bottom of a flat-bottom aluminum boat has an space = 4 m2 and the mass of the boat is 65 kg. If two fishermen and their fishing gear with total mass of 375 kg are placed in the boat, how much moderate will the boat ride in water? (water density = 1000 kg/m3)

In either covering, the boat is at equilibrium, which means the sum of the forces acting on it is 0. Weight is a downward force and is countered by the bedew dilute's buoyancy force (F_B).

-W + F_B = 0, W = Mg, F_B = P_B * A_b

P_B = buoyancy pressure of water = p_w * g * d

where p_w = density of water
g = acceleration of sobriety
d = depth of water that the boat/cargo submerges to

A_b = area of the boat in direct contact with water
M = mass of the boat and any merchandise or occupants

Getting back to the above force equation:

F_B = W

p_w * g * d * A_b = Mg

Since g is present on both sides of the equation, it can be canceled out:

p_w * d * A_b = M

You are dealing with two scenarios....the first is when the boat is empty, the favour when the boat is occupied. In other words....

(1) p_w * d_b * A_b = M_b and

(2) p_w * d_bf * A_b = M_bf

where

d_b = depth that the empty boat submerges to
d_bf = depth that the boat submerges to when it's "full"
(fisherman and their outfit are onboard)
M_b = mass of the boat
M_bf = mass of the boat, fisherman, & cargo

You are interested in finding the quantity (d_bf - d_b), the balance in the submergence that the boat experiences when the fisherman and their gear are present. If you subtract the 1st scenario from the 2nd one, you can isolate this quantity:

p_w * A_b * (d_bf - d_b) = (M_bf - M_b)

d_bf - d_b = (M_bf - M_b)/(p_w * A_b)

= 375 kg/(1000 kg m^-3 * 4 m^2)

= 375 kg/4000 kg m^-1

= 0.09375 meters

The boat submerges an additional 0.09375 m when the fisherman and their accessories are inside it.

Roll on Bed liner for bottom of Aluminum Boat?

Jan 18, 2009 by ~Nicki~ | Posted in Boats & Boating

I got a 14' Aluminum flat bottom boat and i waft the river alot where there are alot of rocks. Would it be a good idea to put a roll on bed liner to protect the bottom of boat? Any Ideas??

no it would agency to much drag, the boats aluminum then dont worry about it have fun

I have a 14' aluminum flat bottom boat. What is the strongest HP outboard I should get and still keep safe.

Jun 29, 2007 by Peter M | Posted in Boats & Boating

highest Right hp outboard. 9.9?15?20hp?

At most to give you an idea
Jon Boat Specifications from another mfg.

1 Bottom width in inches 2 Length by foot
3 Side Height 4 Ray 5 in inches Transom Height 6 Approx. Gauge Aluminum 7 H.P. Rating (Manual)
8 Approx. H.P. Rating (Slender w/ Long Transom)
1xxx2xx3xx4xxxx5xxxxx6xx7x8
36" 12' 19" 59" 17";22" .080 15 ---
36" 14' 19" 59" 17";22" .080 20 ---
42" 14' 19" 60" 17";22" .080 25 40
42" 15' 19" 60" 17";22" .080 25 40

where can i buy an 8 foot flat bottom aluminum boat?

Jul 13, 2006 by paulp4o24 | Posted in Boats & Boating

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