Question

Weight of body in water is 300 N. The water exerted a buoyancy of 30N . calculate the weight of body in air? ​

Answer 1

Answer:

96N

Explanation:

Given that,

Weight of body in air = 100 N

Buoyant force = Weight of liquid displaced

Volume of water displaced = 400 cc  

2

 

Density of water = 1g/cm3

In this case,

 ρ=  

V

m

​

 

m=ρ×V

m=1×400

m=400g

We know that,

The weight of water displaced is

 W=m×g

W=  

5

2

​

×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

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