Question

the weight of body in the water is 18 N which displays 2.5 N water. then weight of body in air is​

Answer 1

Answer:

ANSWER

Given that,

Weight of body in air = 100 N

 Buoyant force = Weight of liquid displaced

 Volume of water displaced = 400 cc2

 Density of water = 1g/cm3

 In this case,

  ρ=Vm

 m=ρ×V

 m=1×400

 m=400g

 We know that,

The weight of water displaced is

  W=m×g

 W=52×9.8

 W=3.92N

Now, weight of the object in water

  W=100−3.92

 W=96.08

 W=96N

Hence, the weight of object in water is 96 N