How much work does it take to raise a $5 kg$ weight $14 m$ ?

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Answer 1 · 2016-07-05T22:05:47

Work is the amount of energy required to move an object using force (in this case to overcome gravity) through a distance (in this case 14 m).

The force of gravity is equal to the mass of the object times the acceleration of gravity $(g = 9.81 m/(s^2))$ .

If we use SI units for everything, the answer will also come out in SI units of energy (joules):

$w = m times g times d = 5 kg times 9.81 m/(s^2) times 14 m = 687 J$

How much work does it take to raise a 5 kg 5 kg weight 14 m 14 m ?