Dead weight is attached to the end of the spring and the corresponding deflection is measured. What is the spring constant, k for the given data. Express it in N/mm. Deflection of the Weight (kg) spring (cm) 3.9 7 5.4 14 6.9 21 8.4 28

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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.