Question

the wait of abody in water is 100 N the water exterd a boyancy of 20N calculate the wait of the body in air​

Answer 1

Answer:

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Answer 2

Correct option is

A

96N

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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