Respuesta :
Answer:
s = (3 cm)/(10 g)*m
Step-by-step explanation:
The length of a spring varies directly with the mass means that the equation has the next form: s = k*m, where m refers to the mass of the object and s refers to the length of the spring. If a 30-gram object is attached, the spring stretches 9 centimeters, then:
s = k*m
9 cm = k*30 g
(9 cm)/(30 g) = k
(3 cm)/(10 g) = k
Therefore, the equation is s = (3 cm)/(10 g)*m