7. (12 points) A hiker is in the process of climbing a steep mountain when they decide to take a short rest while standing. The hiker finds it easiest to keep from tipping over if they stand as shown in the figure, with their left foot high- er up the mountain than their right foot. The dot in the picture represents the hiker's center of mass. The hiker is not moving due to friction. (a) In the provided table, identify the correct description of both the translational and rotational motion of the hiker. (b) Sketch and label an extended free body diagram for the hiker using an axis about the hiker's center of mass. Translational static equilibrium dynamic equilibrium dynamics Rotational static equilibrium dynamic equilibrium dynamics (C) Indicate the direction of the torque on the hiker due to the forces of friction on the left and right foot separately. (d) Is the magnitude of the normal force on the hiker's left foot (toward the top of the mountain) greater thaw, do thaw, or ayaa & the magnitude of the normal force on the hiker's right foot (toward the bot- tom of the mountain)? Explain your reasoning using you diagram and the physics principles we dis- cussed in class. (e) Give an explanation for why the hiker would find it more challenging to stand with their two feet close together.
7. (12 points) A hiker is in the process of climbing a steep mountain when they decide to take a short rest while standing. The hiker finds it easiest to keep from tipping over if they stand as shown in the figure, with their left foot high- er up the mountain than their right foot. The dot in the picture represents the hiker's center of mass. The hiker is not moving due to friction. (a) In the provided table, identify the correct description of both the translational and rotational motion of the hiker. (b) Sketch and label an extended free body diagram for the hiker using an axis about the hiker's center of mass. Translational static equilibrium dynamic equilibrium dynamics Rotational static equilibrium dynamic equilibrium dynamics (C) Indicate the direction of the torque on the hiker due to the forces of friction on the left and right foot separately. (d) Is the magnitude of the normal force on the hiker's left foot (toward the top of the mountain) greater thaw, do thaw, or ayaa & the magnitude of the normal force on the hiker's right foot (toward the bot- tom of the mountain)? Explain your reasoning using you diagram and the physics principles we dis- cussed in class. (e) Give an explanation for why the hiker would find it more challenging to stand with their two feet close together.
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter12: Static Equilibrium And Elasticity
Section: Chapter Questions
Problem 37P: To get up on the roof, a person (mass 70.0 kg) places 6.00-m aluminum ladder (mass 10.0 kg) against...
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Transcribed Image Text:7. (12 points) A hiker is in the process of climbing a steep mountain when they
decide to take a short rest while standing. The hiker finds it easiest to keep
from tipping over if they stand as shown in the figure, with their left foot high-
er up the mountain than their right foot. The dot in the picture represents the
hiker's center of mass. The hiker is not moving due to friction.
(a) In the provided table, identify the correct description of
both the translational and rotational motion of the hiker.
(b) Sketch and label an extended free body diagram for the
hiker using an axis about the hiker's center of mass.
Translational
static equilibrium
dynamic equilibrium
dynamics
Rotational
static equilibrium
dynamic equilibrium
dynamics
(C) Indicate the direction of the torque on the hiker due to the forces of friction on the left and right foot
separately.
(d) Is the magnitude of the normal force on the hiker's left foot (toward the top of the mountain) greater
thaw, do thaw, or ayaa & the magnitude of the normal force on the hiker's right foot (toward the bot-
tom of the mountain)? Explain your reasoning using you diagram and the physics principles we dis-
cussed in class.
(e) Give an explanation for why the hiker would find it more challenging to stand with their two feet
close together.
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