A person practicing a yoga pose (look at the diagram below) is in static equilibrium. The diagram shows normal forces acting on the hands and feet of this person. There are also horizontal static friction forces on the hands and feet not shown in the diagram. Assume the lower body has a magnitude of 450 N and the weight of the upper body has a magnitude of 600N.
A. Consider the system to be the entire body and choose the rotation axis through the point at which the feet makes contact with the floor. Use the torque about this axis to find the total normal force and the floor exerts on the hands.
B. Now use the vertical component of the net force on the entire body to find the normal force of the floor on the feet.
C. What are the directions of the static friction forces on the hands and feet? Find an equation (don't calculate) relating magnitudes for these friction forces.
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A person practicing a yoga pose (look at the diagram below) is
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Problem 3. (20 points) Consider the following simplified model of a person in static equilibrium in a yoga pose. The diagram below shows the upward normal forces acting on the hands and feet, as well as the downward weight forces on the upper and lower body. There are also horizontal static friction forces on the hands and feet not shown in this diagram. Assume the weight of the lower body has magnitude 250 N and the weight of the upper...
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Problem 3. (20 points) Consider the following simplified model of a person in static equilibrium in a yoga pose. The diagram below shows the upward normal forces acting on the hands and feet, as well as the downward weight forces on the upper and lower body. There are also horizontal static friction forces on the hands and feet not shown in this diagram. Assume the weight of the lower body has magnitude 250 N and the weight of the upper...
Consider a person holding a bag like in the diagram, palm facing
upwards, forearm parallel to the floor, and upper arm making a
right angle with their forearm. Masses are added to the bag until
the subject can no longer comfortably keep the angle between their
upper arm and forearm at 90 degrees.
Weight of person: 170 lbs (756.5 N)
Body Segment and Percentage Amount of Total Body Weight
Head( 7.3%), Hand(0.7%), Trunk(50.7%) Thigh(10.3%), Upper
Arm(2.6%)
Calf(4.3%), (Forearm1.6%), Foot(1.5%)
The...
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