Work done by man.
Answer to Problem 52A
Explanation of Solution
Given:
Weight of piano,
Ramp length,
Ramp angle,
Formula Used:
Work done is given by,
Where
Calculation:
Here, component of weight
As the piano is moved slowly with constant velocity, it means there is no net force parallel to ramp on the piano.
So the force parallel to plane is
So, from (1)
Conclusion:
Therefore, work done by man in moving the piano is
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Glencoe Physics: Principles and Problems, Student Edition
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