A student uses spring balance of range 500gwt. He records the weight of a small iron cube of mass 100g in air, in tap water and in a concentrated solution of common salt in water. His three readings taken in the goben order are w1,w2,w3 his measurement is
It is W1>W2>W3 that's it
To determine the weight of the small iron cube in air, tap water, and a concentrated solution of common salt in water, the student will need to use a spring balance.
First, let's define the readings:
w1: Weight of the iron cube in air
w2: Weight of the iron cube in tap water
w3: Weight of the iron cube in the concentrated salt solution
Here's how the student can obtain the measurements:
1. Weight in air (w1):
The student will hang the iron cube from the spring balance and record the reading. This will give the weight of the cube in air, without any other mediums affecting it.
2. Weight in tap water (w2):
To determine the weight in tap water, the student should place the iron cube in a container filled with tap water. Make sure the cube is completely submerged. Again, the student will hang the cube using the spring balance and record the reading. The spring balance will show a difference in weight due to the buoyant force acting on the iron cube by the tap water.
3. Weight in concentrated salt solution (w3):
To determine the weight in the concentrated salt solution, the student should repeat the process done for tap water but instead use a container filled with a concentrated solution of common salt in water. Once again, the student will hang the iron cube with the spring balance and record the reading. The weight will further change due to the increased density of the solution caused by the dissolved salt.
By following these steps and recording the respective readings w1, w2, and w3, the student can have a comprehensive understanding of how the weight of the iron cube varies in different mediums.