Fluids. Buoyancy.MS.KC.1: A steel block hanging from a scale is slowly lowered i

Question

Fluids. Buoyancy.MS.KC.1: A steel block hanging from a scale is slowly lowered into a vat of water that rests on another scale. Consider the time when the block is be- ing lowered and is partialy submerged. Which of the following statements are true regarding this situation (a) The reading on the top scale will be getting smaller while the bottom scale will stay the same value. (b) The reading on the top scale will be getting larger while the bottom scale remains the same value. (c) The reading on the top scale will be getting smaller while the reading on the bottom scale gets larger. (d) The reading on the top scale will be getting larger while the reading on the bottom scale gets smaller. (e) The height of the water in the vat will lower. (f) The pressure from the vat pushing on the bottom scale will remain a constant. (g) After the block is fully submerged but still not touching the bottom of the vat, the readings on both scales will remain constant. water scale

Explanation / Answer

Option (c) and (g) are correct Because due to buoyancy net weight of steel block decreases but total weight of system increases as steel block submerged further inside water

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