1. Mar 28, 2009

### TRBMan

1. The problem statement, all variables and given/known data
A ferry boat is 4.0 m wide and 6.0 m long. When a truck pulls onto it, the boat sinks 4.00 cm in the water. What is the weight of the truck?

2. Relevant equations
$$\rho$$=m/v
and others

3. The attempt at a solution
none. My teacher gave my class chapter to read and complete on our own. I have no idea where to begin to start solving this problem.

2. Mar 28, 2009

### Delphi51

Water must be displaced to get the buoyancy to hold up the truck. The weight of the water displaced will be same as the weight of the truck.

3. Mar 28, 2009

### TRBMan

do i use the P=m/v equation and solve for m?
i would use the density of water for P, and the volume of the water displaced for v, right? I think i understand.
would the answer be 960 kg?

4. Mar 28, 2009

That's it.