Question

A person lifts a 4.3 kg cement block a vertical
distance of 1.3 m and then carries the block
horizontally a distance of 5.3 m.
The acceleration of gravity is 9.81 m/s
2
.
a) Determine the work done by the person
in the process.
Answer in units of J

Answer 1

There is no work done by moving the load horizontally.
The only work done is the lifting, which is equivalent to the potential energy gained by the block given by:
Ep=mgh.

Answer 2

YOlO