I. Gravitational force.
II. Arm position.
III. Momentum
IV. Work height
V. Leverage
Codes :
Mechanics Laws for Body Movement Analysis
This question asks to identify the fundamental laws or principles of mechanics that directly govern how the human body and its segments move.
Key Mechanics Principles for Body Movement
The core principles of mechanics applicable to body movement and segments include:
- I. Gravitational Force: Gravity constantly influences body movement, affecting weight, posture, and the dynamics of actions like jumping or falling. It's a fundamental force described by mechanics.
- III. Momentum: Momentum, calculated as mass times velocity (p = mv), is crucial for understanding how bodies initiate, change, or stop motion. It's essential for analyzing impacts and movement efficiency.
- V. Leverage: The human body utilizes leverage systems (bones acting as levers, joints as fulcrums, muscles providing force) to generate movement. Understanding leverage principles is key to analyzing biomechanics and force production.
Concepts Not Primarily Laws of Mechanics
Other options represent factors or outcomes related to mechanics, rather than the laws themselves:
- II. Arm position: This describes a specific body configuration or state, not a fundamental law governing motion. Arm position is influenced by mechanical laws.
- IV. Work height: This relates to the concept of work and potential energy (PE = mgh) in physics. While important in calculations involving body movement, "work height" itself isn't a foundational law of mechanics but rather a parameter or result.
Conclusion
Therefore, the laws of mechanics that apply directly to body movement and segments are Gravitational force, Momentum, and Leverage.
The correct option includes items I, III, and V.
Important Questions from Physical Education & Psychology
- Who has defined Physical Education as “Physical education is education through physical activities for the development of the total personality of the child and its fulfillment and perfection in body, mind and spirit”?
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Read the statements and choose the correct answer using the code given below.
Assertion (A): Task oriented proactive and assertive behaviour is that which is not extended to injure to achieve one’s goal.
Reason (R): The purpose is to achieve desired goal in which harm to another person occurs accidentally or/and because it is the most efficient way.
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Read the statements and choose the correct answer using the code given below.
Assertion (A): A participant's perception of the causes for an outcome influences subsequent motivation.
Reason (R): Positive outeome which is perceived to be the result of internal personal factors rather than external environmental factors is associated with pride and satisfaction.
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Read the statements and choose the correct answer using the code given below.
Assertion (A): Physical Education teacher should give detailed explanation of the skill to be taught in the beginning.
Reason (R): The students learn most effectively when they have a clear general idea of skill and major technical features involved in the skill but not all the details.
Given below are two statements, one labelled as Assertion (A) and the other labelled as Reason (R). Read the statements and choose the correct answer using the code given below.
Assertion (A): The adaptation process is set in motion only when the load is optimum.
Reason (R): Appropriate balance in load and recovery brings the required changes in the structural and functional aspects of athlete.
