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25 Cards in this Set

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  • Back
Muscular force is broken down into the components of what?
Magnitude
Direction
Application of Force
Line of Force
True or false, a second class lever is similar to a wheelbarrow?
True
What are the categories of inertia?
Resting and Moving Inertia
What class lever is one in which the force is applied between the axis and the resistance?
A Third Class Lever
True or false, a first class lever is similar to a seesaw?
True
True or false, Newton's Second Law of Motion deals with force and it's relationship to mass and acceleration?
True
The ability to perceive your position and movement of the body or limbs in space is known as what?
Kinesthesis
Biomechanics is the study of what?
Movement
Define biomechanics.
Biomechanics is the study of movement.
Explain the importance of stability in exercise execution.
Stability is the act of maintaining your body to ensure safety and effectiveness when using free weights.
What are the four components of force?
1. Magnitude
2. Direction
3. Application of Force
4. Line of Force
What is magnitude?
how much force is applied when lifting
what is direction?
The way in which the force is applied
What is application of force?
Where the force is applied on the body or tool being used
What is the line of force?
The imaginary straight line drawn between the point of application and through the direction of force.
What is the angel of muscle pull?
The variance of force at different points in the range of motion of an exercise.
Explain Newton's First Law of Motion.
An object at rest or in motion will remain in that state unless acted upon by an outside force.
Explain Newton's Second Law of Motion.
The greater the force applied and the greater the distance traveled by the object, the more work will be done.
Define work
the result of force applied multiplied by the distance of the movement.

W = F x D
Define power.
The work done in a unit of time.

Power = Weight x Distance
What is Newton's Third Law of Motion?
Objects in contact exert equal and opposite reactionary forces on each other.
Explain torque as it relates to exercise.
Since torque is the magnitude of twist around an axis of rotation (fulcrum), it is seen in almost all movements of the body, an example being when you do single joint actions.
Name two muscular structural arrangements in the body.
A wheel and axle-like arrangement in the body is needed for the transmission of force, an example being the shoulder joint in medial and lateral rotation. A pulley is another arrangement that is used to create a greater mechanical advantage and to allow the limbs to move more freely, an example being the knee joint, more specifically with the patella.
Explain the relationship between kinesthesis and vision.
Kinesthesis is related to vision in that during exercise it is important to use visual reference points or cues, this focus allows you to balance your body and keep yourself oriented to your surroundings while working out.
Explain gravity as it relates to exercise.
Gravity is the downward pulling force that creates resistance, and is the primary source acting against the weight you lift