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A spring is 20 m long when it has no load. It becomes 10 m shorter when a load of 20 N is placed on top of it. What is its’ spring constant?

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Final answer:

The force constant of the spring is 1225 N/m.

Step-by-step explanation:

The force constant of a spring can be determined using Hooke's law, which states that the force exerted by a spring is directly proportional to its displacement from its equilibrium position. The formula for Hooke's law is F = -kx, where F is the force exerted by the spring, k is the spring constant, and x is the displacement from equilibrium. In this case, we can use the information given to solve for the spring constant.

To find the spring constant, we can use the equation:

k = F / x

Given that the spring stretches 8.00 cm for a 10.0 kg load, and the displacement x is given in meters, we need to convert the displacement to meters:

x = 8.00 cm = 0.08 m

Substituting the values we have:

k = 10.0 kg * 9.8 m/s^2 / 0.08 m = 1225 N/m

Therefore, the force constant of the spring is 1225 N/m.

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