From 1 to 5 Thank you chegg OBJECTIVE The purpose of this experiment is to calcu

Question

From 1 to 5

Thank you chegg

OBJECTIVE The purpose of this experiment is to calculate the density of two solids by applying Archimede's principle and compare the result to the correct values. One of the solids is denser than water while the other one is lighter. MATERIALS Triple beam balance Metal object Wooden cylinder Graduated cylinder INTRODUCTION Any object of mass M and volume V has a density 1) Archimede's principle states that any object totally submerged in a fluid of density pr buoyed up by a net upward force B equal to the weight of the fluid displaced by the object. The displaced fluid is that volume of fluid equal to the volume of the object below the fluid surface such that B prgV. Hence, when an object that is denser than water is in air, a balance measures its true weight Mg. However, if it is submerged in water then the balance reads its apparent weight T ( or apparent mass Ma) such that is Mg Proceeding from the previous equations, the density of the object is given by: =Pr[ M / ( M-Ma] However, if the object is lighter than water ( i.e wood) one must use a sinker attached to the bottom of the object to make it submerge into the water. By following the same above procedure we can calculate the density of wood to be: where M, is the apparent mass when only the sinker is submerged and Mw is the apparent mass when both sinker and wood are submerged. sinker

Explanation / Answer

1)

An air bubble clinging to the metal object will increase the volume of water displaced by the metal. This will increase the buoyant force and therefore will reduce the object’s apparent weight. According to equation = _f [M / (M - M a )], when M a decreases, the object’s density decreases.

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