A 120-Kg Mass Is Placed on a 25 $\degree$ Incline and Friction Keeps It from Sliding

question 39

Multiple Choice

A 12.0-kg mass is placed on a 25.0 $\degree$ incline and friction keeps it from sliding. The coefficient of static friction in this case is 0.580, and the coefficient of sliding friction is 0.520. The mass is given a shove causing it to slide down the incline. What is the frictional force while the mass is sliding?

• A) 55.4 N
• B) 107 N
• C) 49.7 N
• D) 61.2 N

---

Definitions:

Doughnut

A type of fried dough confection or dessert food, commonly ring-shaped and often glazed or sugared.

Down Payment

An initial upfront payment made when purchasing something, especially real estate, usually expressed as a percentage of the total price.

Retrospective Analysis

A psychological autopsy in which clinicians and researchers piece together information about a person’s suicide from the person’s past.

Suicide

A self-inflicted death in which the person acted intentionally, directly, and consciously.