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

1 Answer
May 16, 2018

Answer:

#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"#