Block A, with a Mass of 50 Kg, Rests on a Horizontal

question 69

Multiple Choice

Block A, with a mass of 50 kg, rests on a horizontal table top.The coefficient of static friction is 0.40.A horizontal string is attached to A and passes over a massless, frictionless pulley as shown.The smallest mass m_B of block B, attached to the dangling end, that will start A moving when it is attached to the other end of the string is:

• A)20 kg
• B)30 kg
• C)40 kg
• D)50 kg
• E)70 kg

---

Definitions:

Winter Blues Syndrome

Another term for Seasonal Affective Disorder (SAD), a type of depression related to changes in seasons, especially prevalent during the winter months.

Psychological Disorders

Mental disorders characterized by patterns of behavior or thought that are significant enough to interfere with one's ability to function in daily life.

Prevalent

refers to something that is common or widespread within a particular area or at a particular time.

Effective Treatment

A therapeutic approach or intervention that has been scientifically proven to improve symptoms or conditions in a meaningful way.