Assertion (A): When an object or body is moving at a constant velocity, with no changes in speed or direction, it is dynamic equilibrium.
Reason (R): A cyclist in motion or the body position maintained by a sprinter on the track while running are examples of dynamic equilibrium.
Show Hint
Remember: Equilibrium = Net Force is Zero. If the body is still, it's Static. If the body is moving at a steady speed in a straight line, it's Dynamic.
Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is true, but Reason (R) is false.
Assertion (A) is false, but Reason (R) is true.
Hide Solution
Verified By Collegedunia
The Correct Option isA
Solution and Explanation
Step 1: Understanding the Concept:
Equilibrium in biomechanics is divided into two types: Static (at rest) and Dynamic (in motion). Dynamic equilibrium occurs when all forces acting on a moving body are balanced, resulting in constant velocity. Step 2: Detailed Explanation:
1. Assertion (A) is true because the definition of dynamic equilibrium is the state where a body moves with uniform velocity (no acceleration).
2. Reason (R) is true because a cyclist or sprinter maintaining a steady state of motion is successfully balancing the driving forces against resistive forces (like air resistance and friction).
3. Since the examples in R perfectly illustrate the definition provided in A, R is the correct explanation for A. Step 3: Final Answer:
Both statements are true, and R explains A.
