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Concept explainers
(a)
To calculate:
The amount of stretch
(a)
![Check Mark](/static/check-mark.png)
Answer to Problem 73AYU
The amount of stretch is
Explanation of Solution
Given information:
Formula Used:
The stiffness of the cord is calculated as:
Where,
Weight of the jumper:
Stretch:
Free cord length:
Calculation:
The stiffness of the cord is calculated as:
Put the given data to find amount of stretch:
The roots of the equation find out by using the quadratic formula:
The amount of stretch is never negative so
(b)
To calculate:
The minimum required height for the ledge in the part (a)
(b)
![Check Mark](/static/check-mark.png)
Answer to Problem 73AYU
The minimum required height is
Explanation of Solution
Given information:
Know that:
The minimum distance to the ground together is
The ledge height is calculated by adding the amount of the stretch, rope length and minimum distance to the ground together.
The ledge height is safe minimum distance which allows the jumper to jump safely.
Hence, the ledge height must be
Chapter 4 Solutions
Precalculus
Additional Math Textbook Solutions
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