Question

A steel block weighing 375 lbs./170kg in air and displacing 2 cubic feet of water will weigh _____ in salt water.

1) 372 lbs./168.7kg
2) 391 lbs./177.4kg
3) 247 lbs./112.03kg
4) 346 lbs./156.9kg

Answer 1

The weight of the steel block in salt water can be calculated by considering the buoyant force and the weight of the water displaced by the block.

Step-by-step explanation:

To find the weight of the steel block in salt water, we need to consider the buoyant force exerted on the block. The buoyant force is equal to the weight of the water displaced by the block. Since the steel block displaces 2 cubic feet of water, we can calculate the weight of this water using the density of water. The density of salt water is slightly higher than that of fresh water, so the weight of the steel block in salt water will be slightly less than its weight in fresh water. Since the options provided are given in pounds and kilograms, we can convert the weight of the water to pounds. Using the formula weight = density * volume * acceleration due to gravity, we can calculate the weight of the water displaced by the block in pounds. The answer is option 1) 372 lbs./168.7kg.