A spring when stretched by 2mm its potential energy becomes 4J.If it is stretched by 10mm, its potential energy is equal to
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We know
PE = mgh
Let mass be m and g be gravity
For the first case h is 2mm i.e 2/1000 m
pe = mg*0.002 which ATQ =4J
So value of mg= 4*1000/2 J
= 2000 J
PE when h is 10mm i.e 10/1000 m
=mgh
= 2000*10/1000J
=20J
Hope this helps
PE = mgh
Let mass be m and g be gravity
For the first case h is 2mm i.e 2/1000 m
pe = mg*0.002 which ATQ =4J
So value of mg= 4*1000/2 J
= 2000 J
PE when h is 10mm i.e 10/1000 m
=mgh
= 2000*10/1000J
=20J
Hope this helps
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