Question

A person lifts a 4.5 kg cement block a vertical distance of 1.4 m and then carries the block horizontally a distance of 8.7 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

workdone by the person in J is 445.92J

Step-by-step explanation:

workdone= force x total distance

force= mass x acceleration due to gravity(g)\

mass=4.5kg

g=9.81m/s

force= 4.5 x 9.81 =44.15N

total distance=1.4+8.7=10.1m

workdone=44.15 x 10.1

=445.92J