How much work does it take to raise a 6 kg weight 7 m ?

1 Answer
May 16, 2018

W = 400 " Joules" is required.

Explanation:

Use the equations:
"Work " = "Force"*"distance"

and

"Force " = "mass"*"acceleration"
where acceleration in this case is acceleration due to gravity on Earth, or 9.8 m/s^2.

W = (m)(a)(d)

W = (6 kg)(9.8 m/s^2)(7 m)

W = 411.6 frac{kg*m^2}{s^2}

Now consider significant figures and units to get a final answer of:

W = 400 " Joules"