Assertion (A): The elements of higher pairs must be force closed.Reaso...
Elements of higher pairs must be force closed to provide completely constrained motion.
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Assertion (A): The elements of higher pairs must be force closed.Reaso...
Assertion (A): The elements of higher pairs must be force closed.
Reason (R): This is required in order to provide completely constrained motion.
The given assertion and reason are related to the concept of higher pairs in mechanical engineering. Let's understand the terms and then analyze the assertion and reason.
Higher Pairs:
In mechanical engineering, higher pairs refer to the types of kinematic pairs that have surface contact between the elements. The contact in higher pairs is usually between two surfaces, such as two cylinders, spheres, or cones. These pairs provide a higher degree of constraint and are commonly used in various mechanical systems.
Force Closure:
Force closure is a concept in mechanical engineering that refers to the condition where the external forces acting on a system can be balanced by internal forces within the system. In other words, the elements of a higher pair need to be force closed in order to provide a completely constrained motion.
Analysis of Assertion and Reason:
The assertion states that the elements of higher pairs must be force closed. This means that in order for the system to be completely constrained, the forces acting on the elements should be balanced internally. This is necessary to ensure stability and proper functioning of the mechanical system.
The reason given for the assertion is that force closure is required to provide completely constrained motion. This means that if the forces acting on the elements of a higher pair are not balanced internally, the motion of the system may not be completely constrained. This can lead to instability or unintended movements in the system.
Conclusion:
Both the assertion and reason are individually true, and the reason correctly explains the assertion. The elements of higher pairs must be force closed in order to provide completely constrained motion. Force closure ensures stability and proper functioning of the mechanical system. Therefore, option 'A' is the correct answer.
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