Calculate the workdone to stretch an elastic string by 40cm if a force of 10n produces an extension of 4cm in it

The amount of work that would be required to stretch this elastic string by 40 cm is 20 Joules.

Given the following data:

To find how much work will be required to stretch an elastic string by 40 cm:

First of all, we would determine the spring constant by using the formula:

K = 250 N/m

Mathematically, the work done by a string is given by the formula:

Where:

Substituting the given parameters into the formula, we have;

Work done = 20 Joules.

Therefore, the amount of work that would be required to stretch this elastic string by 40 cm is 20 Joules.

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