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Solved: The sign of many physical quantities depends on
Chapter 6, Problem 1DQ(choose chapter or problem)
Problem 1DQ
The sign of many physical quantities depends on the choice of coordinates. For example, a y for free-fall motion can be negative or positive, depending on whether we choose upward or downward as positive. Is the same true of work? In other words, can we make positive work negative by a different choice of coordinates? Explain.
Questions & Answers
QUESTION:
Problem 1DQ
The sign of many physical quantities depends on the choice of coordinates. For example, a y for free-fall motion can be negative or positive, depending on whether we choose upward or downward as positive. Is the same true of work? In other words, can we make positive work negative by a different choice of coordinates? Explain.
ANSWER:
Solution 1DQ
Introduction
In this problem we have to see if work depends on the choice of coordinate system.
Solution
The work is given by