Answer:
(1) 0.024 N
(2) 0.0093 N
Explanation:
When a body is immersed in a fluid partly of wholly it experience an upward force called buoyant force.
This buoyant force depends on the volume of the body, density of fluid and gravity.
(1) Volume = 2 L = 0.002 m^3
density of air, d = 1.23 kg/m^3
g = 9.8 m/s^2
The buoyant force is
F = V d g
F = 0.002 x 1.23 x 9.8 = 0.024 N
(2) mass, m = 1.5 g
The net vertical force is
F = F - m g
F = 0.024 - 0.0015 x 9.8 = 0.0093 N
