Initially, a Small 2

question 58

Multiple Choice

Initially, a small 2.0-kg rock is whirling at the end of a very thin string in a circular path of radius 0.75 m on a horizontal frictionless surface, as shown in the figure. The initial tangential speed of the rock was 5.0 m/s. The string has been slowly winding around a vertical rod, and a few seconds later the length of the string has shortened to 0.25 m. What is the instantaneous speed of the mass at the moment the string reaches a length of 0.25 m?

• A)3.9 m/s
• B)9.3 m/s
• C)15 m/s
• D)225 m/s
• E)75 m/s

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Definitions:

Forecast Accuracy

The degree to which forecasted values correspond to the actual values observed, often used in planning and inventory management.

Lead Times

The periods required for the completion of processes or activities, especially from the point of order to the delivery of goods.

Supply Chain Managers

Professionals responsible for overseeing and managing the entire supply chain process to ensure efficiency, cost-effectiveness, and timely delivery of products.

Backup Sourcing

Is the strategy of establishing alternative suppliers to ensure the continuity of supply in case of primary supplier failures.