Question

The bottom of the pool is 5 m below the surface of the water. The crane is now used to lift the cube out of the pool. The cube is lifted upward at a slow and constant speed, so all drag forces are negligible. 1. Predict how the force exerted by the crane on the cube when the bottom of the cube is at a depth of 2.0 m compares to the force exerted by the crane on the cube when the bottom of the cube is at a depth of 4.0 m. Explain your reasoning

Answer 1

The force exerted by the crane on the cube is equal to the weight of the cube at different depths in the pool.

Step-by-step explanation:

The force exerted by the crane on the cube when the bottom of the cube is at a depth of 2.0 m is equal to the weight of the cube. The force exerted by the crane on the cube when the bottom of the cube is at a depth of 4.0 m is also equal to the weight of the cube. This is because the force exerted by the crane is equal to the buoyant force acting on the cube, which is equal to the weight of the cube.