To find the limiting force that can be beared by a string, we need a spring balance, some weights, light strings and a weight hanger.
A system needs to be arranged with the help of these objects as shown. After that, following steps need to be followed:
1. Put some small weights like 50 gm on the weight hanger and note the readings of the spring balance.
2. Now add some more weights to the hanger and note the readings of the spring balance.
3. Follow the above step till the string is broken.
4. Note the previous reading of the balance before the addition of the last weight due to which the string broke.
So, now we have the idea of the minimum value of the limiting force.