How much work does it take to raise a #19 kg # weight #15 m #?

1 Answer
Dec 16, 2015

Answer:

#2793J#

Explanation:

Work is the vector dot product of the applied force and the displacement moved in the direction of the force.
#W=vec F * vecx#.

The lifting force overcomes the downward weight force of the object and is given by #f=mg=19xx9.8=186.2N#

Assuming it is lifted directly upwards in a straight line, the force acts in the direction of the displacement, and hence the work done is

#W=186,2*15=2793J#