A 200-N Crate Rests on a Ramp; the Maximum Angle $\degree$

question 13

Multiple Choice

A 200-N crate rests on a ramp; the maximum angle just before it slips is 21 $\degree$ with the horizontal. What is the coefficient of static friction between crate and ramp surfaces?

• A) 0.11
• B) 0.21
• C) 0.38
• D) 0.47

---

Definitions:

Soft Keratin

A type of keratin that is more flexible and found in the epidermis of the skin, providing protection and moisture retention.

Digits

Fingers or toes in humans and other species, also used to describe numerical digits in mathematics and technology.

Stratum Corneum

The outermost layer of the epidermis, consisting of dead cells that form a tough, protective barrier.

Stratum Lucidum

A thin, clear layer of dead skin cells found in the epidermis of the palms and soles, contributing to the skin's barrier function.