FINAL EXAM KIN 300: BIOMECHANICS

Gravity is a measure of what?

Acceleration

The summation of kinetic energy, strain energy, and potential energy is equal to what?

Work

The summation of kinetic energy, strain energy (a type of potential energy), and gravitational potential energy equals the Total Mechanical Energy

True

This statement is true about running:

Kinetic and potential energy are in phase

During static equilibrium, if the summation of all torques equals zero, which of the following is true?

All forces and moment arms can be different

During uphill walking, which of the following is true?

The gastrocnemius and soleus are responsible for the majority of the net positive work

If you are to analyze a DYNAMIC situation, then the sum of all forces is

Non Zero

The tibia applies 20Nm of torque on the femur. According to Newton's 3rd law, the femur applies how much torque on the tibia?

-20Nm

Osteoarthritis is a condition characterized by which of the following?

Loss of joint cartilage

Moment arms for muscles are generally ______ compared to resistance moment arms:

Smaller

During heel strike of gait, what effect does the ground reaction force have on the ankle joint (what sagittal motion is created)?

Plantarflexion

What are two possible movement interventions for alleviating knee osteoarthritis discussed in the video lecture relating to the Lynn et al article?

Foot rotation and lateral hamstring activation

What is the mechanical goal of the two movement interventions discussed during lecture to alleviate osteoarthritis of the knee? As in, how do the two movement interventions affect the mechanics (movement patterns) of the individual with Osteoarthritis?

Increase the external knee extension moment

In which part of the knee joint do most cases of osteoarthritis occur?

Medial compartment