A diver descends from a salvage ship to the ocean floor at a depth of 35 m below the surface. The density of ocean water is 1.025 x 103 kg/m3.
(a) Calculate the gauge pressure on the diver on the ocean floor.
(b) Calculate the absolute pressure on the diver on the ocean floor.
The diver finds a rectangular aluminum plate having dimensions 1.0 m x 2.0 m x0.03 m. A hoisting cable is lowered from the ship and the diver connects it to the plate. The density of aluminum is 2.7 x103 kg/m3. Ignore the effects of viscosity.
(c) Calculate the tension in the cable if it lifts the plate upward at a slow, constant velocity.
(d) Will the tension in the hoisting cable increase, decrease, or remain the same if the plate accelerates upward at 0.05 m/s2?
____ increase ____ decrease ____ remain the same
Explain your reasoning.