Question

The length of a spring varies directly with the mass of an object that is attached to it. When a 30-gram object is attached, the spring stretches 9 centimeters. Which equation relates the mass of the object, m, and the length of the spring, s? a s = StartFraction 3 Over 10 EndFraction m b s = StartFraction 10 Over 3 EndFraction m c m = StartFraction 3 Over 10 EndFraction s d m = StartFraction 1 Over 30 EndFraction s

Answer 1

The equation which relates the mass and length according to the task content is; l = (3/10)m.

What is the equation of proportionality?

From the task content, it follows that the proportional relationship is direct. Hence, the constant of proportionality k can be evaluated as follows;

l = k × m

Hence, k = l/m = 9/30 = 3/10.

Therefore, the proportional relationship is given by the equation; l = (3/10)m

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