Awooden block immersed partially into water. there were 15% of the total volume of the block
exposed and 85% of the total volume immersed in water. calculate a. the density of the wooden block

Density of wooden block is 850 kilogram per cubic meter

Solution:

Given that wooden block immersed partially into water

There were 15% of the total volume of the block  exposed and 85% of the total volume immersed in water

To find: density of the wooden block

The upward force exerted by any fluid upon a body placed in it is called buoyant force

Buoyant force is balanced by weight force of block

Buoyant force is weight of water displaced by block

Buoyant force =

Density of water = = 1000 kg/m3

= volume of block in water = 0.85 V

= Volume of block in air = 0.15 V

Weight of block =

Therefore,

Thus density of wooden block is 850 kilogram per cubic meter

9514 1404 393

  5/3

Step-by-step explanation:

You can divide fractions a couple of ways:

1. Invert the denominator and multiply

2. Make both fractions have the same denominator and use the ratio of their numerators