During a landing from a jump a 70 kg volleyball player with a foot of length 0.25 meters has an angular acceleration of 250 deg/sec 2 around their ankle joint. In this example there are three things producing torque during the landing, one is the soleus, one is the anterior talofibular ligament and one is a torque from the ground reaction force. The soleus muscle inserts at a perpendicular distance of 0.08 and can produce 1000 Newtons of force, this would produce a plantarflexion torque. The anterior talofibular ligament can provide 75 newtons of force that would be used to produce a plantarflexion torque. The ground reaction force of 575 newtons acts at a perpendicular distance of 0.15 meters from the ankle joint and creates a dorsiflexion torque. What is the moment arm of the anterior talofibular ligament?
During a landing from a jump a 70 kg volleyball player with a foot of length 0.25 meters has
an
three things producing torque during the landing, one is the soleus, one is the anterior
talofibular ligament and one is a torque from the ground reaction force. The soleus muscle
inserts at a perpendicular distance of 0.08 and can produce 1000 Newtons of force, this
would produce a plantarflexion torque. The anterior talofibular ligament can provide 75
newtons of force that would be used to produce a plantarflexion torque. The ground reaction
force of 575 newtons acts at a perpendicular distance of 0.15 meters from the ankle joint
and creates a dorsiflexion torque. What is the moment arm of the anterior talofibular
ligament?
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