Question

A spring has an unstretched length of 9.0 cm . It exerts a restoring force F when stretched to a length of 11 cm .For what total stretched length of the spring is its restoring force 3F ?

Answer 1

Step-by-step explanation:

Spring constant k = F/ (11 - 9 cm) = F/2

Stretch X spring constant = 3F

Stretch = 3F / (F/2) = 6 cm

It is STRETCHED 6 cm from it's normal 9 cm for total length 15 cm