College Physics For Ap® Courses
16th Edition
ISBN: 9781938168932
Author: Gregg Wolfe, Irina Lyublinskaya, Douglas Ingram
Publisher: OpenStax
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Chapter 9, Problem 31PE
We analyzed the biceps muscle example with the angle between forearm and upper arm set at 90°. Using the same numbers as in Example 9.4, find the force exerted by the biceps muscle when the angle is 120° and the forearm is in a downward position.
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Solve and answer the question correctly please. Thank you!!
Solve and answer the question correctly please. Thank you!!
A spiral transition curve is used on railroads to connect a straight portion of the track
with a curved portion. (Figure 1)
Part A
v = v₁ft/s
600 ft
y = (106) x³
If the spiral is defined by the equation y = (106)³, where x and y are in feet, determine the magnitude of the acceleration of a train engine moving with a constant speed of v₁ = 30 ft/s when it is at point
x = 600 ft.
Express your answer to three significant figures and include the appropriate units.
?
a =
Value
Units
Chapter 9 Solutions
College Physics For Ap® Courses
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