Question

A body builder exerts a force of 150 N against a bullworker and compresses it by 20 cm. Calculate the spring constant of the spring in the bullworker.

Answer 1

Force exerted by the body builder against the bullworker = 150 N
Compression in the bullworker, x = 20 cm = 0.2 m

∴ Total force exerted, f = kx = 150
Here, k is the spring constant of the spring in the bullworker.

$\therefore k=\frac{150}{0.2}=\frac{1500}{2}=750\mathrm{N}/\mathrm{m}$

Hence, the spring constant of the spring in the bullworker is 750 N/m.