A crane lifts a steel submarine of density 7800 kg/m3 and mass 20,000 kg. What is the tension in the lifting cable (a) when the submarine is submerged in water of density 1000 kg/m3, and (b) when it is entirely out of the water? A) (a) 2.0 x 10^5 N (b) 2.6 x 10^3 N
B) (a) 2.0 x 10^5 N (b) 1.7 x 10^5 N
C) (a) 2.6 x 10^3 N (b) 2.0 x 10^5 N
D) (a) 1.7 x 10^5 N (b) 2.0 x 10^5 N