Inflatable Boat Capacity 420L - Load Capacity Calculation

[chawki]

Homework Statement

Inflatable boat with a capacity of 420 liters, floating in empty, so that 91% of the volume is above the water surface. The density of water is 1020 kg/m3

Homework Equations

How big load in kilograms can be loaded, top of the sink to be just the water surface level?

The Attempt at a Solution

i guess we need to find the buoyant force F_b which is the weight of the water displaced W_wd

W_wd=1020*0.42*9.81 ?
and that's gives us 4202.604 N

or maybe:
W_wd=1020*0.0378*9.81 ??

 

[chawki]

hello

 

[Suk-Sci]

Remember 1000litres = 1m^3

And then use unitary mathod...

Suk-Sci

 

[chawki]

... ... ...

 

[chawki]

anyone can check my work?

 

[chawki]

hello