Discussion
Given below are two statements, one of which is labelled as Assertion (A) and the other is labelled as Reason (R) :
Assertion (A) : Hand grip dynamometer is used to measure the arm power.
Reason (R) : Dynamometer measures strength. In context of the above two statements, which one of the following is correct ?
Codes :
Answer: D
The assertion is false and the reason is true, which is the last code.
A hand grip dynamometer measures the strength of the grip, that is the force of the muscles of the hand and forearm, and is not a measure of arm power, which is force combined with speed. The reason, that a dynamometer measures strength, is correct. The difference matters in testing: power is the product of force and velocity, which is measured by tests such as the vertical jump, while the dynamometer reads only the maximum force that can be exerted.
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