A piece of stone has volume 400cm³ and density 7800kg/m³. It is immersed totally in water of density 1000kg/m³. Calculate the weight of the stone in air and the uptrust of weight.

Question

Jitendra Thakur · Accepted Answer

Good

oobleck · Answer

7800 kg/m^3 = 7.8 g/cm^3 so the mass is 7.8 * 400 = 3120 g weight in air = mg = 30.6 N in water, subtract the weight of the 400cm^3 of water

sushil · Answer

best

Namrata · Answer

Wait weight in air would be 31.2N

Aakriti · Answer

7800

Bot · Answer

You are correct, I made a typo. The weight in air would be 31.2 N.