How much work does it take to raise a #2 kg # weight #3 m #?

1 Answer
Apr 17, 2016

Answer:

#W = 58.8Nm#

Explanation:

Work is force times distance,

#W=Fd#,

and force is mass times acceleration,

#F=ma#.

In this case, acceleration is that of gravity,

#a=g=9.8m/s^2#,

and #m=2kg#, as in the question, so

#F=2kg*9.8m/s^2=19.6N#.

Inserting this into the equation for work, along with the distance of #3m#,

#W=Fd=19.6N*3m=58.8Nm#

which is the final answer.