Question

a string 20 centimetre long a force of 10 Newton acts as the string 6cm what will be the length of the string if a force of 20 newton is apply​

Answer 1

Answer:

According to Robert Hooke, Stress and Strain are proportional. So I guess, it should be 12

Answer 2

Answer:

The spring extends by 5cm when a load of 50N is applied.

F = kx

Therefore 50 = 0.05k

Therefore 50/0.05 = k = 1000N/m

F = 1000x

100 = 1000x

100/1000 = x = 0.1m = 10cm

Original length = 20cm

Therefore full length = 10 + 20 = 30cm