Answer:
Weight = 6.919 n
Buoyant force = 4.397 N
Apparent weight = 2.522 N
Explanation:
radius, r = 0.0199 m
density of platinum = 2.14 x 1064 kg/m^3
density of mercury = 1.36 x 1064 kg/m^3
Weight of sphere= volume of sphere x density of platinum x g
= 4/3 x 3.14 x (0.0199)^3 x 2.14 x 10^4 x 9.8 = 6.919 N
Buoyant force acting on sphere = Volume of sphere x density of mercury x g
= 4/3 x 3.14 x (0.0199)^3 x 1.36 x 10^4 x 9.8 = 4.397 N
Apparent weight = True weight - Buoyant force = 6.919 - 4.397 = 2.522 N
