Question

The volume of a plastic box is 250 cubic centimetre and the box has a mass of 500 g .Will the box sink or float on water?What will be the mass of water displaced by box? *

Float , 250 g

Sink , 250 g

Float , 500 g

Sink , 500 g

​

Answer 1

Answer

Sink,250g

Given:

• Volume of a plastic bag = 250cm^3.

• Mass of box = 500g.

To find:

1. The box will float or sink.

2. The mass of water displaced by box.

Solution:

1.

We know that,

Density = Mass/volume

Density = 500/250

Density = 2

As we know that,if the density of an object is greater than water then that object will sink. If it is less than water's density, then the object will float.

Here,density is 2.So, the object will sink.

______________________________

2.

We know that,

Mass of water displaced = Density × Volume

Mass of water displaced = 1 × 250

Mass of water displaced = 250g

Note: Density of water is 1g/cm^3

______________________________

Thus,

• The box will sink.

• The mass of water displaced by box is 250g