Question

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

Answer 1

Answer:

the spring will stretch 10 cm

Explanation:

With the 40 N mass hanging from it, the restorative force of the spring will equal 40 N.

Let's recall that the restorative force "F" of the spring has a magnitude proportional to the displacement "x" from its relax position as per the following formula:

$F = k* x$ where "k" is the spring's constant.

We can from this expression find the value of the displacement "x" just solving for it in the equation:

$F = k* x\\40\,N=400 \frac{N}{m} *x\\x=\frac{40}{400} m\\x=0.1\,m$

Such displacement is equivalent to 10 cm.

Answer 2

Answer:

The correct answer is 10 cm.

Explanation:

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