A tank weighing 150 kN is lowered on a parachute during the exercise. What is the resultant force in this case? what is the mass of the tank?
Ft = Mt * g
since when the tank is parachuting, its downward movement is uniform (steady fall), then Fc-Ft = 0, where
Fc – air resistance force
The resultant forces in this case is equal to zero.
Mt = Ft / g = 150 * 10 ^ 3 / 9.81 = 15.29 * 10 ^ 3 kg = 15.29 tons – the mass of the tank
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