it depends on the needle.
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The density of a needle can vary depending on the material it is made of. For example, a stainless steel needle has a density of about 8 grams per cubic centimeter, while an aluminum needle has a density of about 2.7 grams per cubic centimeter.
The density of a material is determined by the mass of its particles and how closely packed they are. In the case of a needle, its particles are closely packed together, leading to a higher density compared to water, which has particles that are more spread out. This difference in packing arrangement causes the needle to have a higher density than water.
As we know that the ratio of the density to the volume is inverse relation. As the volume of the object is lesser, than the density will be greater.So the condition of floating bodies depend upon the weight of the displaced liquid.If the object(needle) is denser,so it will not be able to displace more liquid.Therefore needle sinks in water.
As we know that the ratio of the density to the volume is inverse relation. As the volume of the object is lesser, than the density will be greater.So the condition of floating bodies depend upon the weight of the displaced liquid.If the object(needle) is denser,so it will not be able to displace more liquid.Therefore needle sinks in water.
Yes, a needle can float on water if it is carefully placed on the surface due to surface tension. However, if the needle is pushed down into the water, it will sink due to its density being greater than that of water.
A needle sinks in water due to its higher density compared to water. The weight of the needle overcomes the buoyant force exerted by the water, causing it to sink.