Concept explainers
Which requires more work, lifting a 10-kg load a vertical distance of 2 m or lifting a 5-kg load a vertical distance of 4 m?
To identify: The load that will requires more work to lift for the given specifications.
Answer to Problem 3A
Same work is required in lifting both the loads.
Explanation of Solution
Given :
Mass of first load,
Vertical distance of first load,
Mass of second load,
Vertical distance of second load,
Formula used :
According to work energy theorem wok done is equal to change in potential energy.
Where, W is work done, m is mass and h is vertical distance.
Calculation :
Acceleration due to gravity,
For first load substituting the value of m , g and h and solve.
For second load substituting the value m , g and h and solve.
Conclusion :
Therefore, same work is required in lifting both the loads.
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