Question

calculate the height through which a body of mass 0.5kg should be lifted if the energy spent for doing so is 1 joule (g = 10 ms sq.)

Answer 1

hence, height =5 m
I hope it help you

Answer 2

W=F*s (s=displacement) ( here, s=height)
and W=mgs (F=mg)
=>1= 0.5*10*s
=> 1=5s
=> s=0.2m