A 90-Kg Box of Oranges Slides from Rest Down a Frictionless

question 18

Multiple Choice

A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m. A constant frictional force, introduced at point A, brings the block to rest at point B, 19 m to the right of point A.
-What is the coefficient of kinetic friction, $\mu$ _k, of the surface from A to B?

• A)0.11
• B)0.26
• C)0.33
• D)0.47
• E)0.52

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Definitions:

Unrecognized Prior Service Cost

Costs related to pension plan benefits earned in previous periods but not recognized at that time, due to changes in plan terms or estimations.

Years-of-Future-Service Method

The Years-of-Future-Service Method is a technique used in accounting to calculate pension or retirement benefits, based on the projected years of service of an employee.

Defined Benefit Pension Plan

A retirement plan where the employer guarantees a specific retirement benefit amount for the employee based on factors such as salary history and length of employment.

Service Cost

The expense recognized by an employer for the benefits provided to employees under defined benefit pension plans for the period.