A person exercises the quadriceps as shown. The diagram on the right shows a model of the leg, where the person's lower leg of length L = 0.60 m is held at an angle 0₁ = 60° with respect to the horizontal. The quadriceps muscle exerts a force FM via the tendon that attaches to the tibia at a distance d = 0.10 m from the knee, in order to lift a weight of mass m₁ = 5.91 kg that is attached to the foot. The tendon makes an angle of 0₂ = 11.5° with respect to the tibia. 2 What is the force required to hold the weight at the position shown in the diagram? Assume the person's lower leg weighs 150 N and its centre of mass is located at a distance L/2 from the knee. Round your answer to the nearest Newton. 82 01 m₁

A person exercises the quadriceps as shown. The diagram on the right shows a model of the leg, where the person's lower leg of length L = 0.60 m is held at an angle 0₁ = 60° with respect to the horizontal. The quadriceps muscle exerts a force FM via the tendon that attaches to the tibia at a distance d = 0.10 m from the knee, in order to lift a weight of mass m₁ = 5.91 kg that is attached to the foot. The tendon makes an angle of 0₂ = 11.5° with respect to the tibia. 2 What is the force required to hold the weight at the position shown in the diagram? Assume the person's lower leg weighs 150 N and its centre of mass is located at a distance L/2 from the knee. Round your answer to the nearest Newton. 82 01 m₁

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter9: Statics And Torque

Section: Chapter Questions

Problem 37PE: (a) What force should the woman in Figure 9.45 exert on the floor with each hand to do a push-up?...

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