COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 9, Problem 41QAP
To determine
(a)
What force would be needed to stretch the bar to 1.00 m if a bar of aluminum has a cross section of 1.0 cm x 1.0 cm and a length of 88 cm?
To determine
(b)
What is the tensile strain of the bar of aluminum at that point?
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A circular rod of cross-sectional area 2 x 104 m² has a tensile force of 80 kN applied to it.
The stress in the rod is
Select one:
a. 4.0 x 106 Pa
b. 0.4 x 10° Pa
O c. 40 x 104 Pa
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A femur bone of length 30 cm and diameter 2.5 cm is subjected to a compressive tress of 1.5 *10 N/m². Find the decrease in it's length if the young's modulus of bone is 1.5 10 10 N /m?. A) 0.80 cm B) 0.60 cm c) 0.30 cm D) 0.25 cm
Q2- A biological tissue underwent tensile tests, subjected to the axial load P.
a) Determine the average normal (ơ) and average shear stresses (t) acting over area section
shown below(A'), which is oriented at angle 0 from the horizontal, as a function of 0 and
vertical cross section A.
b) Determine angle 0 where o=3 t.
(24 points)
A'=A/sin0
P
01
A
(Results: o =- (sine)²,t = - sin0 cose,0 = 71.56°)
%3D
A
А
Chapter 9 Solutions
COLLEGE PHYSICS
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