Concept explainers
A dike in Holland springs a leak through a hole of area
Force that should be applied by thumb of a boy on the hole to stop the leak.
And to specify whether the person will exert the obtained force or not.
Answer to Problem 50A
The calculated value of the force 2 N is very small. Hence, this force can be easily exerted by the boy with his thumb to stop the leak.
Explanation of Solution
Given:
Area of hole =
Depth =
Calculation:
The pressure exerted on the hole at depth
Here,
Calculation:
Use the density of water and depth of the water to find the pressure exerted on the hole at the depth
Substitute
The force exerted on the hole by the boy with his thumb is,
Here,
Substitute
Since, the force is less, so it is possible to apply this much force.
Conclusion:
Therefore, the force exerted on the hole by the boy with his thumb is
Chapter 19 Solutions
Conceptual Physics: The High School Physics Program
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