A 24-N Horizontal Force Is Applied to a 40-N Block $\mu$

question 27

Multiple Choice

A 24-N horizontal force is applied to a 40-N block initially at rest on a rough horizontal surface. Ifthe coefficients of friction are $\mu$ _s = 0.5 and $\mu$ _k = 0.4, the magnitude of the frictional force on the block is:

• A) 8 N
• B) 12 N
• C) 16 N
• D) 20 N
• E) 400 N

---

Definitions:

Great Mosque

A term generally referring to significant and historically important Islamic places of worship, often characterized by their architectural grandeur and cultural significance.

Adobe

The clay used to make a kind of sun-dried mud brick of the same name; a building made of such brick.

Lydenburg Heads

A set of terracotta sculptures discovered in Lydenburg, South Africa, believed to date back to the 5th century AD, representing some of the earliest known African art.

Scarification Marks

Decorative scars created through intentional cutting and healing of the skin, a cultural practice found in various indigenous cultures around the world.