CONCEPTUAL PHYSICS LL FD
12th Edition
ISBN: 9780135745816
Author: Hewitt
Publisher: PEARSON
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Textbook Question
Chapter 2, Problem 36RCQ
Nellie hangs motionless by one hand from a clothesline.
Which side of the line, a or b, has the greater tension?
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43. A mass må undergoes circular
motion of radius R on a hori-
zontal frictionless table, con-
nected by a massless string
through a hole in the table to
a second mass m² (Fig. 5.33).
If m₂ is stationary, find expres-
sions for (a) the string tension
and (b) the period of the circu-
lar motion.
m2
R
m₁
FIGURE 5.33 Problem 43
CH
70. A block is projected up an incline at angle 0. It returns to its initial
position with half its initial speed. Show that the coefficient of ki-
netic friction is μk = tano.
Passage Problems
A spiral is an ice-skating position in which the skater glides on one
foot with the other foot held above hip level. It's a required element
in women's singles figure-skating competition and is related to the
arabesque performed in ballet. Figure 5.40 shows Canadian skater
Kaetlyn Osmond executing a spiral during her medal-winning perfor-
mance at the 2018 Winter Olympics in Gangneung, South Korea.
77. From the photo, you can conclude
that the skater is
a. executing a turn to her left.
b. executing a turn to her right.
c. moving in a straight line out of
the page.
78. The net force on the skater
a. points to her left.
b. points to her right.
c. is zero.
79. If the skater were to execute the same
maneuver but at higher speed, the tilt
evident in the photo would be
a. less.
b. greater.
c. unchanged.
FIGURE 5.40 Passage
Problems 77-80
80. The tilt angle 0 that the skater's body
makes with the vertical is given ap-
proximately by 0 = tan¯¹(0.5). From this you can conclude…
Chapter 2 Solutions
CONCEPTUAL PHYSICS LL FD
Ch. 2 - What class of motion, natural or violent, did...Ch. 2 - What state of motion did Aristotle attribute to...Ch. 2 - What relationship between the Sun and Earth did...Ch. 2 - What did Galileo discover in his legendary...Ch. 2 - What did Galileo discover about moving bodies and...Ch. 2 - Is inertia the reason for moving objects...Ch. 2 - How does Newton's first law of motion relate to...Ch. 2 - What type of path does a moving object follow in...Ch. 2 - What is the net force on a cart that is pulled to...Ch. 2 - Why do we say that force is a vector quantity?
Ch. 2 - According to the parallelogram rule, what quantity...Ch. 2 - What is the resultant of a pair of 1-pound forces...Ch. 2 - Consider Nellie hanging at rest in Figure 2.11. If...Ch. 2 - Can force be expressed in units of pounds and also...Ch. 2 - What is the net force on an object that is pulled...Ch. 2 - What is the net force on a bag pulled down by...Ch. 2 - What does it mean to say something is in...Ch. 2 - State the equilibrium rule for forces in symbolic...Ch. 2 - Consider a book that weighs 15 N at rest on a flat...Ch. 2 - When you stand at rest on a bathroom scale, how...Ch. 2 - A bowling ball at rest is in equilibrium. Is the...Ch. 2 - What is the net force on an object in either...Ch. 2 - If you push on a crate with a force of 100 N and...Ch. 2 - What concept was not understood in the 16th...Ch. 2 - A bird sitting in a tree is traveling at 30 km/s...Ch. 2 - Prob. 26RCQCh. 2 - Prob. 27RCQCh. 2 - Prob. 28RCQCh. 2 - 29. The sketch shows a painter’s scaffold in...Ch. 2 - 30. A different scaffold that weighs 400 N...Ch. 2 - 31. The weights of Burl, Paul, and the scaffold...Ch. 2 - 32. Rank the net forces on the blocks from least...Ch. 2 - Different materials, A, B, C, and D, rest on a...Ch. 2 - Prob. 34RCQCh. 2 - As seen from above, a stubborn stump is pulled by...Ch. 2 - Nellie hangs motionless by one hand from a...Ch. 2 - Prob. 37RCQCh. 2 - Prob. 38RCQCh. 2 - Prob. 39RCQCh. 2 - Prob. 40RCQCh. 2 - Prob. 41RCQCh. 2 - Prob. 42RCQCh. 2 - Prob. 43RCQCh. 2 - Prob. 44RCQCh. 2 - Prob. 45RCQCh. 2 - Prob. 46RCQCh. 2 - Prob. 47RCQCh. 2 - Prob. 48RCQCh. 2 - Prob. 49RCQCh. 2 - Prob. 50RCQCh. 2 - Prob. 51RCQCh. 2 - Prob. 52RCQCh. 2 - Prob. 53RCQCh. 2 - Prob. 54RCQCh. 2 - Prob. 55RCQCh. 2 - The rope supports a lantern that weighs 50 N. Is...Ch. 2 - Prob. 57RCQCh. 2 - The rope of Exercise is repositioned as shown as...Ch. 2 - Prob. 59RCQCh. 2 - Prob. 60RCQCh. 2 - Prob. 61RCQCh. 2 - Prob. 62RCQCh. 2 - Prob. 63RCQCh. 2 - Harry the painter swings year after year from his...Ch. 2 - For the pulley system shown, what is the upper...Ch. 2 - Prob. 66RCQCh. 2 - Prob. 67RCQCh. 2 - Prob. 68RCQCh. 2 - Prob. 69RCQCh. 2 - Prob. 70RCQCh. 2 - Prob. 71RCQCh. 2 - Prob. 72RCQCh. 2 - Prob. 73RCQCh. 2 - Prob. 74RCQCh. 2 - Prob. 75RCQCh. 2 - Prob. 76RCQCh. 2 - Prob. 77RCQCh. 2 - Prob. 78RCQCh. 2 - Prob. 79RCQCh. 2 - Prob. 80RCQCh. 2 - Prob. 81RCQCh. 2 - Prob. 82RCQCh. 2 - Prob. 83RCQCh. 2 - Prob. 84RCQCh. 2 - Prob. 85RCQCh. 2 - Prob. 86RCQCh. 2 - Prob. 87RCQCh. 2 - Prob. 88RCQCh. 2 - Prob. 89RCQCh. 2 - Prob. 90RCQCh. 2 - Prob. 91RCQCh. 2 - Prob. 92RCQ
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