An iron anchor of density 7800.00 kg/m3 appears 158 n lighter in water than in air. (a) what is the volume of the anchor? (b) how much does it weigh in air?

a) Volume of the anchor is

b) An anchor weighs 1,232.4 N in an air.

Explanation:

Weight of an anchor in water =  W

Weight of an anchor in air = w

w - W = 158 N

Difference in weight will be equal to weight of water displaced as per as Archimedes principle.

Weight of the water =

Volume of an anchor = volume of water displaced = V

Density of water =

Mass of water displaced = m

Volume of the anchor is

Mass of iron anchor = m

Density of the an iron anchor =

Volume of the anchor = V =

Weight of an anchor in an air = w

w = 1,232.4 N

An anchor weighs 1,232.4 N in an air.