When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, Fe, is supported by the force n exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where T is the force exerted by the Achilles tendon on the foot and R is the force exerted by the tibia on the foot. Find the values of T, R, and 0 when F, = n = 720 N. (For 0, enter the smaller of the two possible values between 0° and 90°.)

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
icon
Related questions
Question
**Educational Website Text: Analysis of Forces on a Foot in Tiptoe Position**

When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, \(\vec{F}_g\), is supported by the force \(\vec{n}\) exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where \(\vec{T}\) is the force exerted by the Achilles tendon on the foot and \(\vec{R}\) is the force exerted by the tibia on the foot.

**Goal:**
Find the values of \(T\), \(R\), and \(\theta\) when \(F_g = n = 720 \, \text{N}\). (For \(\theta\), enter the smaller of the two possible values between 0° and 90°.)

---

**Figures and Descriptions:**

- **Figure a:** An anatomical diagram showing the foot with the Achilles tendon and tibia. The foot is positioned on the floor, illustrating how force \(\vec{n}\) is applied.
  
- **Figure b:** A mechanical model depicting force vectors and distances:
  - \(\vec{R}\): Shown at an angle of 15.0°.
  - \(\theta\): The angle formed between forces \(\vec{R}\) and \(\vec{T}\).
  - Distances are labeled as 18.0 cm (horizontal) and the total lever arm length as 25.0 cm.

---

**Input Fields:**

- \(T =\) (Input for the force in Newtons)
- \(R =\) (Input for the force in Newtons)
- \(\theta =\) (Input for the angle in degrees)

This analysis is useful for understanding the mechanical forces and biomechanical aspects involved when a person stands on tiptoe, offering insights into physiology and physics.
Transcribed Image Text:**Educational Website Text: Analysis of Forces on a Foot in Tiptoe Position** When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, \(\vec{F}_g\), is supported by the force \(\vec{n}\) exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where \(\vec{T}\) is the force exerted by the Achilles tendon on the foot and \(\vec{R}\) is the force exerted by the tibia on the foot. **Goal:** Find the values of \(T\), \(R\), and \(\theta\) when \(F_g = n = 720 \, \text{N}\). (For \(\theta\), enter the smaller of the two possible values between 0° and 90°.) --- **Figures and Descriptions:** - **Figure a:** An anatomical diagram showing the foot with the Achilles tendon and tibia. The foot is positioned on the floor, illustrating how force \(\vec{n}\) is applied. - **Figure b:** A mechanical model depicting force vectors and distances: - \(\vec{R}\): Shown at an angle of 15.0°. - \(\theta\): The angle formed between forces \(\vec{R}\) and \(\vec{T}\). - Distances are labeled as 18.0 cm (horizontal) and the total lever arm length as 25.0 cm. --- **Input Fields:** - \(T =\) (Input for the force in Newtons) - \(R =\) (Input for the force in Newtons) - \(\theta =\) (Input for the angle in degrees) This analysis is useful for understanding the mechanical forces and biomechanical aspects involved when a person stands on tiptoe, offering insights into physiology and physics.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Mechanical Equilibrium
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
College Physics
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON