Question

What will be the extension with a weight of 4 N?

Answer 1

Answer:

Correct option is

C

3.5 N

Using Hooke's law: F=kx

                                  k=xF=slope of graph1

Line passes from : (1,0.4),(2,0.8)

slope =2−10.8−0.4=0.4

k=0.41=2.5

Extension = Final length − initial length

x=16.4−15=1.4

using F=kx

F=2.5×1.4

F=3.5N

Explanation:

• So East Yrr
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