EBK ESSENTIAL UNIVERSITY PHYSICS, VOLUM
4th Edition
ISBN: 9780135272947
Author: Wolfson
Publisher: VST
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Chapter 5, Problem 40P
In the process of mitosis (cell division), two motor proteins pull on a spindle pole, each with a 7.3-pN force. The two force vectors make a 65° angle. What’s the magnitude of the force the two motor proteins exert on the spindle pole?
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ment
Chapter 05, Problem 007
There are two forces on the 1.82 kg box in the overhead view of the figure but only one is shown. For F,
= 20.0
N, a = 13.5 m/s², and 0 = 21.5°, find the second force (a) in unit-vector notation and as (b) a magnitude and
(c) a direction. (State the direction as a negative angle measured from the +x direction.)
(a) Number
i +
jUnits
(b) Number
Units
(c) Number
Units
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An object is suspended from two cables that meet at a point above the object. One cable pulls with a force modeled by F1 = −77i + 35j. The other cable pulls with a force modeled by F2 = 92i + 84j. What is the angle between the cables? Round to the nearest degree.
a
119°
b
71°
c
105°
d
113°
A student's car stalls right in front of a speed bump while she is on her way to physics class. To pull it over the bump, she ties a cable to her bumper and to a nearby tree, and pulls with a force, F, of 81.0 lbs (360 N) at the midpoint in a perpendicular direction.If θ is 11.0°, what is the size of the force pulling the car in lbs
Chapter 5 Solutions
EBK ESSENTIAL UNIVERSITY PHYSICS, VOLUM
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