COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 9, Problem 67QAP
To determine
(a)
The number of strands needed to support a person having mass of 85 kg.
To determine
(b)
The diameter of the rope and reasons.
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Many caterpillars construct cocoons from silk, one of the strongest naturally occurring materials known. Each thread is typically
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Assuming that there is no appreciable space between the
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make a rope 8.6 m long that would stretch only 1.06 cm when
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Question Source: Freedman College Physics 3e | Publisher: Mac
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Many caterpillars construct cocoons from silk, one of the strongest naturally occurring materials known. Each thread is typically
2.0 µm in diameter, and the silk has a Young's modulus of 4.0 x 10° N/m2.
Assuming that there is no appreciable space between the
parallel strands, how many strands N would be needed to
N =
strands
make a rope 8.6 m long that would stretch only 1.02 cm when
supporting a pair of 85-kg mountain climbers?
Again assuming that there is no appreciable space between the
parallel strands, what would be the diameter d of the rope?
d =
cm
Many caterpillars construct cocoons from silk, one of the strongest naturally occurring materials known. Each thread is typically
2.0 µm in diameter, and the silk has a Young's modulus of 4.0 × 10⁹ N/m².
Assuming that there is no appreciable space between the
parallel strands, how many strands N would be needed to
make a rope 8.2 m long that would stretch only 1.02 cm when
supporting a pair of 91-kg mountain climbers?
N =
Again assuming that there is no appreciable space between
the parallel strands, what would be the diameter d of
the rope?
strands
d =
cm
Chapter 9 Solutions
COLLEGE PHYSICS
Ch. 9 - Prob. 1QAPCh. 9 - Prob. 2QAPCh. 9 - Prob. 3QAPCh. 9 - Prob. 4QAPCh. 9 - Prob. 5QAPCh. 9 - Prob. 6QAPCh. 9 - Prob. 7QAPCh. 9 - Prob. 8QAPCh. 9 - Prob. 9QAPCh. 9 - Prob. 10QAP
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