Concept explainers
Rank the scale readings from greatest to least. (Ignore friction.)
To rank: The scale readings from greatest to least.
Answer to Problem 32A
The rank of the scale readings from greatest to least is
Explanation of Solution
Given:
The given figure is shown below.
Also, friction is considered negligible.
Formula used:
The expression for the weight of block is,
Here,
Calculation:
Sketch the free body diagram for each case as shown below.
For case A: The mass is supported by a string.
Find the tension on the string. For Equilibrium of forces,
For case B: The mass is supported by two strings.
Find the tension on the string. For Equilibrium of forces,
For case C: The mass is supported by two strings.
Find the tension on the string. For Equilibrium of forces,
By comparing the values of tension on string
Conclusion:
Thus, the rank of the scale readings from greatest to least is
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Conceptual Physics: The High School Physics Program
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