Same spring is attached with 2 kg, 3 kg and 1 kg blocks in three different cases as shown in figure. If x1, x2, x3 be the extensions in the spring in the three cases, then
x1=0,x3>x2
x1>x2>x3
x2>x1>x3
x3>x2>x1
Solution:
If T1, T2, T3 are the tensions in the strings in the three cases, we have