A Uniform Ladder Is 10 Cm Long and Weighs 400 $\degree$

question 42

Multiple Choice

A uniform ladder is 10 cm long and weighs 400 N. It rests with its upper end against a frictionless vertical wall. Its lower end rests on the ground and is prevented from slipping by a peg driven into the ground. The ladder makes a 30 $\degree$ angle with the horizontal. The force exerted on the wall by the ladder is:

• A) 48 N
• B) 74 N
• C) 120 N
• D) 350 N
• E) 610 N

---

Definitions:

Amygdala

A part of the brain involved in experiencing emotions, particularly fear and pleasure.

Type A Personality

A temperament characterized by high levels of competitiveness, self-imposed stress, and a constant sense of urgency.

Hostility

Aggressive behavior or attitudes towards others, often stemming from anger or resentment.

Facial Feedback

The hypothesis that facial movements can influence emotional experiences, suggesting that expressions can contribute to feelings.