The unstretched length of each of the two elastic rubber bands of the sling is 180 mm. Determine the maximum height the 30g stone will reach when fired vertically upward if they are stretched and released as shown in the figure. The stiffness of both rubber bands is k = 80 N / m.

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.