Answer:
buoyant force = 4.160 kN
Explanation:
given data
altitude = 3.35 km
toy balloon = 600
radius r = 0.54 m
mass m = 0.27 kg
to find out
total buoyant force
solution
we will apply here buoyant force formula that is
buoyant force for 600 = 600 × ρ × g × v ..................1
here v volume = 4/3 × π × r³ = 4/3 × π × 0.52³ = 0.5889
and ρ = 1.20 kg/m³
so
buoyant force for 600 = 600 × ρ × g × v
buoyant force for 600 = 600 × 1.20 × 9.81 × 0.5889
buoyant force = 4160.06 N
buoyant force = 4.160 kN