Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 2, Problem 18CQ
To determine
The reason that Newton’s first law of motion tells that centrifugal force does not exist.
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For this problem, assume that the earth is a perfect sphere. Also, assume that if your
mass is m, then the earth exerts a gravitational force on you of magnitude mg, where g
= 9.8 m/s2 at all points of the earth's surface.
a) Your mass is m =
will the scale read? (Thanks to the Third Law, this is the same as asking for the
normal force exerted on you by the scale.)
b) Next you go to the Equator and stand on a scale. What does it read? The radius
of the earth is 6.4 × 106 m.
c) Suppose the earth were rotating so quickly that objects became “weightless" at
the equator. How long would the day be?
50 kg. If you are standing on a scale at the North Pole, what
Rank the following situations from LEAST to GREATEST
gravitational force. Provide an explanation.
A
B
C
M
M
m
(2m)
D
2M
M
(m)
d
2d
(2m)
A 0.758 kg coin is placed at 0.298 from the center of a rotating horizontal turntable. When the coin has a speed 0.512 m/s, the force of
static friction keeps the coin moving in uniform circular motion and provides the centripetal acceleration. What is the force of static
friction? (Consider Newton's law for centripetal acceleration}
O 0.667 N
O 0.446 N
O 0.889 N
O 0.213 N
O 0.541 N
com mand
Chapter 2 Solutions
Integrated Science
Ch. 2.2 - A quantity of 5 m/s2 is a measure of a. metric...Ch. 2.2 - Prob. 2SCCh. 2.4 - Prob. 3SCCh. 2.4 - Prob. 4SCCh. 2.5 - Prob. 5SCCh. 2.5 - Prob. 6SCCh. 2.6 - Ignoring air resistance, an object falling near...Ch. 2.7 - Prob. 8SCCh. 2.7 - Prob. 9SCCh. 2.9 - Prob. 10SC
Ch. 2.9 - A ball is swinging in a circle on a string when...Ch. 2.10 - Prob. 12SCCh. 2 - An insect inside a bus flies from the back toward...Ch. 2 - Disregarding air friction, describe all the forces...Ch. 2 - Can gravity act in a vacuum? Explain.Ch. 2 - Is it possible for a small car to have the same...Ch. 2 - Prob. 5CQCh. 2 - Prob. 6CQCh. 2 - Why should you bend your knees as you hit the...Ch. 2 - Prob. 8CQCh. 2 - Prob. 9CQCh. 2 - Prob. 10CQCh. 2 - Prob. 11CQCh. 2 - Prob. 12CQCh. 2 - Prob. 13CQCh. 2 - Prob. 14CQCh. 2 - Prob. 15CQCh. 2 - Prob. 16CQCh. 2 - Prob. 17CQCh. 2 - Prob. 18CQCh. 2 - Prob. 1PEACh. 2 - Prob. 2PEACh. 2 - Prob. 3PEACh. 2 - Prob. 4PEACh. 2 - Prob. 5PEACh. 2 - Prob. 6PEACh. 2 - Prob. 7PEACh. 2 - Prob. 8PEACh. 2 - Prob. 9PEACh. 2 - Prob. 10PEACh. 2 - Prob. 11PEACh. 2 - Prob. 12PEACh. 2 - Prob. 1PEBCh. 2 - Prob. 2PEBCh. 2 - Prob. 3PEBCh. 2 - Prob. 4PEBCh. 2 - If a space probe weighs 39,200 N on the surface of...Ch. 2 - Prob. 6PEBCh. 2 - Prob. 7PEBCh. 2 - Prob. 8PEBCh. 2 - Prob. 9PEBCh. 2 - Prob. 10PEBCh. 2 - Prob. 11PEBCh. 2 - Prob. 12PEB
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