Concept explainers
The amount of the ice block melted as a result of the work done by friction.
Answer to Problem 77A
Explanation of Solution
Given:
The mass of block of ice,
The initial velocity of the ice block,
The final velocity of the ice block,
Formula used:
The kinetic energy of an object of mass
And, the work done on an object is given by the change in its kinetic energy,
Where
And, the heat of fusion is given by
Where
Calculation:
Heat released in the given process is,
Now, it is known that heat of fusion of water is,
Then using the mentioned formula, the mass of ice melted is,
Conclusion:
Thus, the mass of the melted ice is
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Glencoe Physics: Principles and Problems, Student Edition
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