Asked by Diaco

A spherical vessel used for deep-sea exploration has a radius of 1.50 m and a mass of 1.20 Γ— 104 kg. To dive, the vessel takes on mass in the form of seawater. Determine the mass the vessel must take on if it is to descend at a constant speed of 1.20 m/s, when the resistive force on it is 1100 N in the upward direction. The density of seawater is equal to 1.03 Γ— 103 kg/m3.

Answers

Answered by jenny.t
Σ𝐹𝑦=π‘šπ‘Žπ‘¦=0βˆ’(1.20Γ—104π‘˜π‘”+π‘š)𝑔+𝑝𝑀𝑔𝑉+1100𝑁=0
Where π‘š is the mass of the added water and 𝑣 is the sphere’s volume. 1.20Γ—104π‘˜π‘”+π‘š=1.03Γ—103[43πœ‹(1.50)3]+1100𝑁9.8π‘š/𝑠2=2.67Γ—103π‘˜π‘”
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