1.

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»

l EXPLAIN you the concept behind it. Rest you can calculate USING your mathematical tools or calculator FIRST find out the spring constantF=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



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