Question

A spring when streached by 2mm it's potential energy becomes 4j . If it is streached by 10mm, it's potential energy is equal to

Answer 1

20 Joule

Explanation:

PE = mgh

4= m*10*2

m=1/5

Now

PE= mgh

Pe= 1/5*10*10

PE= 20j

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Answer 2

Answer:

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