Question

IF 1000 J OF WORK IS DONE BY A MACHINE TO LIFT A LOAD THROUGH A HEIGHT OF 10 M..CALCULATE THE WEIGHT OF THE LOAD LIFTED....

Answer 1

Work done=force × displacement

1000J=force×10

Force=100N

Force=mass×acceleration

Here...acceleration=acceleration due to gravity i.e.9.8m/s^2 but for sake of simplicity g=10m/s^2

Therefore
100=mass×10

Mass=10kg

@skb