A spring with natural length l0 has a te...

A spring with natural length `l_0` has a tension `T_1` when its length is `l_1` and the tension is `T_2` when its length is `l_2`.The natural length of spring will be:

A

`T_1l_2-T_2l_1/l_1-l_2`

B

`T_2l_1-T_1l_2/T_2-T_1`

C

`T_2l_2-T_1l_1/T_1-T_2`

D

`T_2l_1-T_1l_2/T_2+T_1`

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