Question

1)name x and y

2)calculate the apparent loss of weight of an object
3)calculate the up thrust act on an object.
4)what can you tell about the volume of water displaced and volume of an object when it is fully immersed in water

Answer 1

1. x is a spring balance and y is a beaker filled with water. Spring balance is an instrument used to measure weight of an object.

2. We know, apparent loss in weight = weight in air - apparent weight

Here, weight of the object in air = 20 N

Apparent weight of the object = 12 N

Therefore, the apparent loss of weight of the object = 20 N - 12 N = 8 N

3. We know, upward thrust is the weight of the fluid displaced by the immersed part of the object.

Upward thrust = W

The loss in weight of a solid completely immersed in a fluid is equal to the weight of fluid displaced by the solid.

So, the upward thrust is equal to the apparent loss of weight of the object, i.e., 8 N.

4. The volume of water displaced is equal to the volume of an object when it is fully immersed in water.

Answers:

1. x is spring balance, y is a beaker.
2. 8 N
3. 8 N
4. They are equal.

Hope you could understand.

If you have any query, feel free to ask.