Question:
A diver in a swimming pool bends his head before diving, because it:
A diver in a swimming pool bends his head before diving, because it:
Updated On: Jan 15, 2024
- decreases his moment of inertia
- decreases his angular velocity
- increases his moment of inertia
- increases his linear velocity
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The Correct Option is A
Solution and Explanation
When the diver bends his head, it decreases his moment of inertia. It results an increase in angular speed. Hence, it provides the diver more spin for fulfillers diver.
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Concepts Used:
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- The system of particles refers to the extended body which is considered a rigid body most of the time for simple or easy understanding. A rigid body is a body with a perfectly definite and unchangeable shape.
- The distance between the pair of particles in such a body does not replace or alter. Rotational motion can be described as the motion of a rigid body originates in such a manner that all of its particles move in a circle about an axis with a common angular velocity.
- The few common examples of rotational motion are the motion of the blade of a windmill and periodic motion.