2. Researchers have found that a gecko\'s foot, is covered with hundreds of thou

Question

2. Researchers have found that a gecko's foot, is covered with hundreds of thousands of small hairs (called setae) that allow it to walk up walls and even across ceilings. A single foot, whose toe pads have a total surface area of 1.0cm2, can attach to a wall or ceiling with a force of 11 N. Part A.How many 250-g geckos could be suspended from the ceiling by a single foot?

Part B. Estimate the force per square centimeter that your body exerts on the soles of your shoes, and compare with the 11N/cm2 of the sticky gecko foot.
Estimate the force per square centimeter that your body exerts on the soles of your shoes, and compare with the of the sticky gecko foot.

a. The force per square centimeter exerted on the soles of a 700-N person’s two feet is equal 100 N/cm2. In fact, a human foot could support the weight of three . human-sized geckos.
b. The force per square centimeter exerted on the soles of a 700-N person’s two feet is equal 10 N/cm2.
c. The force per square centimeter exerted on the soles of a 700-N person’s two feet is equal 1.8 N/cm2. In fact, a single human-sized gecko foot could support the weight of three humans that each weigh 700 N.

Explanation / Answer

here,

force by each pad , fs = 11 N

area , a = 1 cm^2

a = 1 * 10^-4 m^2

A)

the number of geckos suspended , n = fs/( 0.25 * g)

n = 11/( 0.25 * 9.8)

n = 4.45

the number of geckos are 4

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.