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timurjin [86]
3 years ago
10

A box that has a weight of 40 N is hung from a spring. The spring constant of the spring is 400 N/m. How many centimeters will t

he spring stretch? 0.1 cm 1 cm 10 cm 100 cm
Physics
2 answers:
suter [353]3 years ago
7 0

the correct answer is c. 10 cm

Andrej [43]3 years ago
5 0
The mathematical relationship between force and extension for a spring is F = -kx , where F is the restoring force, k is the spring constant and x is the extension. If a box that weighs 40 N is hung from a spring of content 400 N/m, then the extension is equal to x = -F / k = -400 / 40 = -10 cm. The negative sign simply shows the extension and restoring force are in opposite directions. The answer is 10 cm. 
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