The body is lifted along an inclined plane, performing 180 kJ useful work. Determine the total work
| February 8, 2021 | education
The body is lifted along an inclined plane, performing 180 kJ useful work. Determine the total work if the efficiency of the ramp is 90%.
To find the total (expended) work when lifting the body along an inclined plane, we will use the formula: η = Ap / Apoln, from where we express: Apoln = Ap / η.
Values of variables: Ap – useful work performed (Ap = 180 kJ); η – plane efficiency (η = 90% = 0.9).
Let’s calculate: Apoln = Ap / η = 180 / 0.9 = 200 kJ.
Answer: The total work when lifting the body along the plane is 200 kJ.
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