Question

The 100 g mass is replaced with a 600 g mass. The length of the spring is now 89.7 cm. The spring has not reached the limit of proportionality. The 600 g mass is replaced with a 200 g mass. What is the length of the spring?

Answer 1

600g mass = 89.7 cm

1 g mass = 89.7/600

200g mass = 89.7/600×200

= 29.9 cm