Density of the weight-compared with the density of water

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A weight is attached to one end of a lightweight spring held at other end. When the weight comes to rest, the spring is stretched 20 cm beyond its natural length. In another condition the weight is completely immersed in water. When the weight comes to rest, the spring is stretched 15 cm beyond its natural length .
Question: How many times greater is the density of the weight, compared with the density of water?

Reference no: EM13561759

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