Answer:
1500 kg/m³
Explanation:
tension = Apparent weight = 0ne third of the weight of sphere
Let the true weight = W
Buoyant force = True weight - Apparent weight
Volume x density of water x g = W - W/3
V x 1000 x g = 2 W/ 3
V x 1000 x g = 2 x V x d x g / 3
Where, d is the density of sphere
1000 = 2d/3
d = 3000 / 2
d = 1500 kg/m³
Thus, the density of sphere is 1500 kg/m³.
