Can anyone help me on this one?
2006-12-02 22:14:52 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
The water level goes DOWN. (siddarth had the right answer, but the wrong reason ... he is ignoring the fact that everybody else is raising, namely that the stone still displaces some water ... my point is that it displaces less water.)
When something floats, it displaces its *weight* in water.
When something sinks, it displaces its *volume* in water.
So while in the boat, the weight of the stone displaces a lot of water. But when tossed in the lake, it displaces a small amount of water. So the level of the lake would drop slightly.
To see this more clearly, imagine that you have some ultra-dense rock so that something the size of a golf ball weight 500 pounds. While in the boat, this contributes 500 pounds to the weight of the boat and so the boat (with the golf ball) displaces 500 pounds worth of water. That's a lot of water.
But when you drop the golf ball in the lake, it displaces an amount of water the same volume as the golf ball ... which is not very much. Meanwhile the boat just got 500 pounds lighter, and is thus displacing 500 pounds less water. So the level of the water goes down.
So what if the reverse were true, and the 'stone' was made of some ultra-light material so that something the size of a basketball weighed only 1 gram? In that case it would float, and would make no difference if it was inside or outside the boat.
But since we're talking about a stone ... something assumed to be denser than water (which means that its weight in water exceeds its volume in water) ... the water level would drop.
2006-12-03 03:32:19 · answer #1 · answered by secretsauce 7 · 2⤊ 0⤋
The level of the water remains the same since the same amount of weight is still in the lake. The boat will float a little more higher in the water since it now weighs less.
2006-12-03 02:37:06 · answer #2 · answered by TCay G 2 · 0⤊ 1⤋
the level of water decreases bcoz when u throw the stone we feel that the boat is going up but rather the water level decreases.
2006-12-02 22:19:02 · answer #3 · answered by sidd the devil 2 · 0⤊ 0⤋
Level will not change. The stone had already contributed any minor raise in water level while in boat due to buoyancy.
2006-12-02 22:17:50 · answer #4 · answered by Rammohan 4 · 2⤊ 2⤋
the water will ripple and the water level will stay the same
2006-12-02 22:22:28 · answer #5 · answered by Wicked 7 · 0⤊ 1⤋
Secretsauce has it right, take a look at that website to see why the rest are wrong.
2006-12-03 03:59:59 · answer #6 · answered by Anonymous · 2⤊ 0⤋
WATER LEVEL REMAINS THE SAME
2006-12-02 22:18:58 · answer #7 · answered by mohit d 1 · 0⤊ 1⤋
"nothing".
2006-12-02 22:22:39 · answer #8 · answered by Anonymous · 0⤊ 1⤋