Answer: 17.658kJ
Explanation:
The work done in lifting the refridgerator is given my
W = F.d
Where W = Work done, F = Force and d = distance/height to be covered by that force = 6m
But F = mg (this work is done against gravity)
Where m = mass of fridge and g = acceleration due to gravity.
F = 300kg × 9.81m/s^2
= 2943N
W = Fh (where h is the height to be scaled by the force)
W = 2943 × 6
W = 17658J
17.658kJ of work is needed to lift the refridgerator to a height of 6m
