Question

A force of 7.5N stretches a certain spring by 5 cm .How much work is done by stretching this spring by 8 cm?

Answer 1

See I'll explain you the concept behind it

. Rest you can calculate using your mathematical tools or calculator

First find out the spring constant

F=kx

We get k value

Now work done is given by 1/2kx^2 substituting k value and x value which is given we get the amount of energy ...

Ty