1.

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»

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

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