Give reasons why it will be easy to loosen a nut with a long spanner.
Explain why a ship mase up of tons of iron floats in water while a needle while a needle which is much lighter does not.
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it is easy to open nut with long spanner because moment of force depends directly on the perpendicular distance from the axis
ship floats because it has low density than that of water as it is hollow from inside on the other hand needle sinks as it is denser than water
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