Question

A copper weight weighs 268 N in air and displaces an amount of water weighing 30. N . What is the weight of the copper measured in water?

Answer 1

I'm not too sure about this question but its weight in water might be 30N because the law of floatation states that a floating object displaces it own weight of fluid.....

Answer 2

Answer:

238 N

Explanation:

Archimedes principle states that every body submerged in a fluid is buoyed up by a force equal to the weight of the fluid displaced by the body:

$W_I=W-W_f$

Here, $W_I$ is the immersed weight of the copper, and $W_f$ is the weight of the displaced water. Due to this, the copper has a weight when immersed in water of:

$W_I=268N-30N\\W_I=238N$