Question

pls help



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Answer 1

Concept:-Total work done=change in kinetic energy+change in potential energy

here potential energy is 0

so here

total work done=change in kinetic energy

Area under the f-s graph gives total work done

Solution:-Kinetic energy attained by particle at

L/2=total work done on particle upto distance

L/2=1/2 ×Fmax ×L/2=LFmax/4

kinetic energy at L=1/2 ×Fmax ×L=LFmax/2