Question

(Densities of object 1 and 2 are greater than that of the fluid)


1. Object 1 and 2 have same volume and shape, but object 1 is more dense than object 2, which one has greater buoyant force??

2. object 1 and 2 has same mass, but density of object 1 is greater than object 2(has more volume), which one has the greatest buoyant force?


The greater the volume, the greater the bouyant force. Buoyant force is related to the volume of the fluid displaced.


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 combined weight of the truck and the ferry?

Answer 1

force = mass x gravity
Force = density x volume x gravity
= 1000 x 4 x 6 x 0.04 x 9.8
= 9408 N

Answer 2

force = mass x gravity
Force = density x volume x gravity
= 1000 x 4 x 6 x 0.04 x 9.8
= 9408 N