As James orbits, he slams into a space elevator, peals himself off, and gets in. On the way down, he thinks about how much strain his legs (0.3m long) can take. If he has a mass of 45kg, and a diameter of 3cm what is the strain on each leg? Assume compact bone.
As James orbits, he slams into a space elevator, peals himself off, and gets in. On the way down, he thinks about how much strain his legs (0.3m long) can take. If he has a mass of 45kg, and a diameter of 3cm what is the strain on each leg? Assume compact bone.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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As James orbits, he slams into a space elevator, peals himself off, and gets in. On the way down, he thinks about how much strain his legs (0.3m long) can take. If he has a mass of 45kg, and a diameter of 3cm what is the strain on each leg? Assume compact bone.
Transcribed Image Text:Static Kinetic Rolling
Materials
Ms
Mr
Rubber on
1.00
0.80
0.02
concrete
Steel on steel
0.80
0.60
0.002
(dry)
Steel on steel
0.10
0.05
(lubricated)
Wood on wood
0.50
0.20
Wood on snow
0.12
0.06
Ice on ice
0.10
0.03
Young's modulus
(10 1º N/m²)
Material
Cast iron
20
Tensile strength
(N/m²)
Steel
20
Material
Silicon
13
Polypropylene
20 × 106
Соpper
11
Glass
60 × 106
Aluminum
7
Cast iron
150 × 106
Glass
7
Concrete
3
Aluminum
400 × 106
Wood (Douglas Fir)
1
Steel
1000 X 106
Young's modulus
(101º N/m²)
Tensile strength
(N/m²)
Material
Material
Tooth enamel
6.
Compact bone
Spongy bone
Spongy bone
1.6
5 × 106
0.02–0.3
Compact bone
100 × 106
Spider silk
0.2
Tendon
0.15
Tendon
100 × 106
Cartilage
Blood vessel (aorta)
0.0001
Spider silk
1000 X 106
0.00005
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