Block A, with a Mass of 10 Kg, Rests on a 30

question 38

Multiple Choice

Block A, with a mass of 10 kg, rests on a 30 $\degree$ incline. The coefficient of kinetic friction is 0.20. The attached string is parallel to the incline and passes over a massless, frictionless pulley at the top. Block B, with a mass of 8.0 kg, is attached to the dangling end of the string. The acceleration of B is:

• A) 0.69 m/s², up
• B) 0.69 m/s², down
• C) 2.6 m/s², up
• D) 2.6 m/s², down
• E) 0 m/s²

---

Definitions:

Duty of Care

The legal obligation to ensure the safety or well-being of others by taking reasonable precautions or actions to avoid acts of negligence.

Duty of Diligence

The obligation to perform work with careful attention, effort, and thoroughness, particularly in a professional or legal context.

Profit of Shareholders

The portion of a company's profits that is allocated to stockholders, often seen as a primary goal of businesses to maximize shareholder value.