Plz solve Q9 also can we write the ans in standard form or simple in numbers how the ans has to be ? Share with your friends Share 0 Patel Nisarg answered this WORK DONE BY A BOY = O POTENTIAL ENERGY = 4000 THAT IS MGH 0 View Full Answer Avval answered this potential energy=mgh=40*10*10=4000J work is conserved as energy so work done=4000J 1
