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.

Question

Madden Jordan

Social Studies

10 July, 11:26

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.

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Answers (1)

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Samuel Lutz · Answer 1

workdone by the person in J is 445.92J

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