Biomechanics Introduction
This is the study of the mechanical principles that govern the movement and structure of living organisms.
What is Biomechanics?
An object at rest will stay at rest. Object in motion will stay in motion at a constant velocity unless acted upon by an external force. This is the definition of which law of motion?
What is Newton's law of inertia (1st)?
A push or pull exerted on an object, measured in newtons (N)
What is Force?
This part of a lever is the pivot point.
What is the Fulcrum?
This lever is set up to have the load between the fulcrum and the effort.
What is a second class lever?
Biomechanics plays a role in ______ by doing the following, conserving energy, preventing injury, generating more power, optimizing movements and eliminating wasted movement.
What is sports?
In biomechanics, this law explains how muscles produce movement: greater muscle force results in greater acceleration of a limb, assuming the mass remains constant.
What is Newtons law of Acceleration (2nd)?
Otherwise known as the movement of force, is a measure of the force causing an object to rotate around an axis, measured in newton-meters (Nm)
This part of a lever is the force being applied.
What is the effort?
The idea that allow us to move heavier loads, while others allow for greater range or speed of movement.
What is Mechanical Advantage?
Biomechanics plays a role in ________ by doing the following, enhance patient care, develop effective recovery strategies, educate patients on movements that prevent future injury, quantifies rotational forces at individual joints and identifies muscle imbalances.
What is Physical Therapy?
This law states that for every action, there is an equal and opposite reaction.
What is Newton's law of action and reaction (3rd Law)?
The amount of force applied over a specific area, measured in pascals (Pa)
What is Pressure?
This part of a lever is the resistance or object.
What is the load?
Tweezers, fishing rod, broom and shovel are all examples of this type of lever.
What is a third class lever?
Biomechanics plays a role in ______ ____ by doing the following, makes substantial contributions to medicine and health, human and animal movement and performance prosthetics, helps improve walking patterns, helps improve the complex full body movements of dancers, performers and workers and contributes to improving posture.
What is every day life?
This law states that the acceleration of an object is directly proportional to its mass (F= ma, where F is force, m is mass, and a is acceleration)
Forces generated within the body by muscles, tendons, ligaments, and bones.
What are Internal Forces?
What is a third class lever?
Seesaw, scissors, pliers and crowbars are all example of this type of lever.
What is a first class lever?
What are kinetics, kinematics and muscle mechanics?
In conjunction with Newton's first law of inertia, friction works to ________ the body when a runner begins to stop.
What is deceleration?
These are forces that act on the body from outside sources, such as gravity, friction, and resistance from objects.
What are External Forces?
This type of lever is set up to have the fulcrum between the effort and the load.
What is a first class lever?
A wheel barrow, bottle opener and a nut cracker are all examples of this type of lever?
What is a second class lever?