Question

What is the spring constant for a supermarket scale that stretches 0.01 m when a force of 4 N is applied

Answer 1

Answer: The spring constant for the supermarket scale is 400 N/m.

Explanation:

To calculate the spring constant, we use Hooke's Law. The formula for Hooke's law is:

$F=kx$

where, F = Force applied on the spring = 4N

k = Spring constant = ? N/m

x = Compression or extension of the spring = 0.01m

Putting values in above equation, we get:

$400N=k\times 0.01m\\\\k=400N/m$

Hence, the spring constant for the supermarket scale is 400 N/m.

Answer 2

The answer to the question is 400 N.