Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN: 9781133939146
Author: Katz, Debora M.
Publisher: Cengage Learning
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Chapter 5, Problem 58PQ
To determine
What is wrong in the horse statement?
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How do you find the normal force
between a table with a mass of 35 kg and
the floor?
(Assume that normal force and gravity are
the only two vertical forces.)
Your answer:
The normal force is the same
number - 35 kg.
Multiply the mass by the coefficient
of friction.
Multiple the mass by gravitational
acceleration (g = 9.8 m/s²)
The normal force is zero because
the table isn't moving vertically.
The normal force is 9.8 N because it
is on Earth.
Clear answer
firsthand in the laboratory.
Thought Experiment 1. A 2 kg mass and a 3 kg mass are connected by a massless cord and
move on a horizontal frictionless surface. The 3 kg mass is pulled to the right with a force of 20
N. The tension in the cord is 8 N. Fill in the "F" and "ma" blanks.
2 kg
8 N
3 kg
20 N
Force: Net Force on 2 kg mass
N.
Net Force on 3 kg mass
N.
-
Motion: Mass X Accel. of 2 kg mass =
kg m/s.
%D
Mass X Accel. of 3 kg mass =
kg m/s².
DELL
II
A book (m = 3.50 kg) is at rest on a table. Maria pushes down on the book with a 10.0 N force. If the magnitude of the gravitational force on the book is 34.3 N, what is the magnitude of the normal force on the book? Express your answer in Newtons.
Chapter 5 Solutions
Physics for Scientists and Engineers: Foundations and Connections
Ch. 5.2 - Because Newtons first law is counterintuitive, it...Ch. 5.2 - Train Collision and Newtons First Law A group of...Ch. 5.3 - Shown in Figure 5.4 are four situations in which a...Ch. 5.3 - A person stands on a spring scale in an elevator...Ch. 5.4 - Prob. 5.5CECh. 5.5 - Prob. 5.6CECh. 5.6 - a. Take a moment to be sure that you understand...Ch. 5.7 - Imagine weighing the same bunch of bananas with...Ch. 5.7 - For all three situations, find the magnitude and...Ch. 5.9 - Prob. 5.10CE
Ch. 5.9 - A child jumping off the monkey bars at a...Ch. 5.9 - Prob. 5.12CECh. 5 - Why is it easier to lift a very large beach ball...Ch. 5 - Prob. 2PQCh. 5 - Imagine pushing two blocks on ice. The light block...Ch. 5 - When Julia Child would cook an omelet, she would...Ch. 5 - Prob. 5PQCh. 5 - Prob. 6PQCh. 5 - Prob. 7PQCh. 5 - Prob. 8PQCh. 5 - Prob. 9PQCh. 5 - Prob. 10PQCh. 5 - Prob. 11PQCh. 5 - You blow a small piece of paper through the air....Ch. 5 - Prob. 13PQCh. 5 - Prob. 14PQCh. 5 - Prob. 15PQCh. 5 - Prob. 16PQCh. 5 - Prob. 17PQCh. 5 - A ball hanging from a light string or rod can be...Ch. 5 - Prob. 19PQCh. 5 - You are riding a luxury bus. In front of you is a...Ch. 5 - Prob. 21PQCh. 5 - A particle with mass m = 4.00 kg accelerates...Ch. 5 - The x and y coordinates of a 4.00-kg particle...Ch. 5 - In the movie Garden State, one of the characters...Ch. 5 - The starship Enterprise has its tractor beam...Ch. 5 - A race car is moving around a circular track at a...Ch. 5 - A particle of mass m1 accelerates at 4.25 m/s2...Ch. 5 - Prob. 28PQCh. 5 - Two forces F1=(62.98i15.80j) N and...Ch. 5 - Three forces F1=(62.98i15.80j) N,...Ch. 5 - A hockey stick pushes a 0.160-kg puck with...Ch. 5 - If the vector components of the position of a...Ch. 5 - If the vector components of the position of a...Ch. 5 - A 15.0-kg object is in free fall near the surface...Ch. 5 - A black widow spider hangs motionless from a web...Ch. 5 - Determine whether each of the following statements...Ch. 5 - You place tomatoes in the pan of a hanging spring...Ch. 5 - Kinetic friction is proportional to the normal...Ch. 5 - A student takes the elevator up to the fourth...Ch. 5 - A sleigh is being pulled horizontally by a train...Ch. 5 - Two blocks are connected by a rope that passes...Ch. 5 - Find an expression for the carts acceleration in...Ch. 5 - A woman uses a rope to pull a block of mass m...Ch. 5 - A student working on a school project modeled a...Ch. 5 - One great form of athletic competition for...Ch. 5 - A heavy crate of mass 50.0 kg is pulled at...Ch. 5 - A block with mass m1 hangs from a rope that is...Ch. 5 - To get in shape, you head to the local gym to...Ch. 5 - A block with mass m1 hangs from a rope that is...Ch. 5 - FIGURE P5.49 Problems 49 and 50. Suppose the...Ch. 5 - Two objects, m1 = 3.00 kg and m2 = 8.50 kg, are...Ch. 5 - A runaway piano starts from rest and slides down a...Ch. 5 - Does the ground need to exert a force on you for...Ch. 5 - A boxer breaks his hand by punching another boxers...Ch. 5 - Prob. 55PQCh. 5 - A textbook rests on a movable wooden plank that is...Ch. 5 - Prob. 57PQCh. 5 - Prob. 58PQCh. 5 - Prob. 59PQCh. 5 - A worker is attempting to lift a 55.0-kg palette...Ch. 5 - Prob. 61PQCh. 5 - A concept map is a visual representation of...Ch. 5 - A 75.0-g arrow, fired at a speed of 110 m/s to the...Ch. 5 - Prob. 64PQCh. 5 - A box with mass m1 = 6.00 kg sliding on a rough...Ch. 5 - Prob. 66PQCh. 5 - A cosmic ray muon with mass m = 1.88 1028 kg...Ch. 5 - Prob. 68PQCh. 5 - Prob. 69PQCh. 5 - A 1.50-kg particle initially at rest and at the...Ch. 5 - A block of ice (m = 15.0 kg) with an attached rope...Ch. 5 - A block of ice (m = 15.0 kg) with an attached rope...Ch. 5 - Prob. 73PQCh. 5 - Starting from rest, a rectangular toy block with...Ch. 5 - When a 1.50-kg dress hangs midway from a taut...Ch. 5 - Jamal and Dayo are lifting a large chest, weighing...Ch. 5 - A heavy chandelier with mass 125 kg is hung by...Ch. 5 - Two children, Raffi and John, sitting on sleds...Ch. 5 - Two boxes with masses m1 = 4.00 kg and m2 = 10.0...Ch. 5 - Two blocks of mass m1 = 1.50 kg and m2 = 5.00 kg...Ch. 5 - An aerial demonstration aircraft dives at an angle...Ch. 5 - A painter sits on a scaffold that is connected to...Ch. 5 - Three crates with masses m1 = 5.45 kg, m2 = 7.88...Ch. 5 - A small block with mass m is set on the top of an...
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- Imagine a book sitting on a horizontal table. One of the forces acting on a book is a normal force exerted by the table (let's call it action). What force does form the Newton's 3rd law pair (reaction)? Normal force exerted on the Earth by the book. Normal force exerted on the table by the book. Normal force exerted on the table by the Earth. Normal force exerted on the Earth by the table.arrow_forwardA flea jumps by exerting a force of 1.02 10-5 N straight down on the ground. A breeze blowing on the flea parallel to the ground exerts a force of 1.12 10-6 N on the flea. Find the direction and magnitude (in m/s2) of the acceleration of the flea if its mass is 6.0 10-7 kg. (Let us assume that Fwind points to the right. We will consider this to be the +x direction and vertical to be the +y direction.) magnitude m/s2direction ° (measured clockwise from the vertical)arrow_forwardConsider applying Newton's second law to a man riding an elevator (perhaps to calculate his acceleration). Which of the following forces must be considered? Choose all that apply. The force that the man's head exerts on his neck. The force of gravity on the elevator. The force the elevator cable exerts on the elevator car. The force that the elevator floor exerts on the man's feet. The force that the man's feet exert on the floor of the elevator. The force of gravity on the man.arrow_forward
- A flea jumps by exerting a force of 1.17 x 10-5 N straight down on the ground. A breeze blowing on the flea parallel to the ground exerts a force of 1.12 x 10-6 N on the flea. Find the direction and magnitude (in m/s²) of the acceleration of the flea if its mass is 6.0 × 10-7 kg. (Let us assume that wind points to the right. We will consider this to be the +x direction and vertical to be the +y direction.) magnitude direction m/s² ° (measured clockwise from the vertical)arrow_forwardIf you are floating in outer space, and you need to change your motion in order to get back to the safety of your spaceship. You throw your shoe away with a force of 320 Newtons, which means the shoe pushes back on you with a force of 320 Newtons. If you have a mass of 61 kg, what is the magnitude of your acceleration?arrow_forwardImagine a landing craft approaching the surface of Callisto, one of Jupiter's moons. If the engine provides an upward force (thrust) of 3048 N, the craft descends at constant speed; if the engine provides only 2057 N, the craft accelerates downward at 0.39 m/s2. What is the weight of the landing craft in the vicinity of Callisto's surface? What is the mass of the craft? What is the magnitude of the free-fall acceleration near the surface of Callisto?arrow_forward
- Segunda Ley de Newton 1. A group of students performed Newton's second law experiment and made a graph of acceleration vs. net force. Using the table, determine: Net force (g cm/s) Acceleration (cm/s') 9800 19600 29400 39200 34.325 66.425 100.925 134.425 49000 170,575 200.3 58800 68600 230.575 a) The slope of the line with its units. b) The total mass of the system. c) If the body's acceleration is 350 cm/s?, what will the net force be?arrow_forwardA man weighing 700 N is in an elevator that is accelerating upward at 4 m/s?. The force exerted on him by the elevator floor is: A 290 N B) 990 N 410 N D 700 Narrow_forwardA man stands on a scale in an elevator that is accelerating upward. The scale reads 973.8 N. When he holds a 44.0 kg box, the scale reads 1449.8 N. What is the man's mass? and What is the magnitude of the acceleration of the elevator?arrow_forward
- A flea jumps by exerting a force of 1.02 x 10-5 N straight down on the ground. A breeze blowing on the flea parallel to the ground exerts a force of 1.16 × 10-6 N on the flea. Find the direction and magnitude (in m/s²) of the acceleration of the flea if its mass is 6.0 × 107 kg. (Let us assume that F points to the right. We will consider this to be the +x direction and vertical to be the +y wind direction.) magnitude 17.1 Did you draw a free-body diagram, and identify the forces acting on the flea? Consider the forces acting on the flea during the time it is in contact with the ground. m/s² direction 6.49 Review vector components. In which of the four quadrants is the resultant force located?° (measured clockwise from the vertical) Tutorial Supporting Materials Physical Constants Submit Answerarrow_forwardA man pushes a 50.0-kg rock across a frozen lake with a force of 70.0 N at an angle of 30° below the horizontal (as shown by arrow). What normal force does the frozen lake surface exert on the rock? {Consider Newton's Laws and the forces/components (+/-). Note he is pushing below the horizontal} O 333 N O 282 N O 245 N O 455 N O 525 Narrow_forwardYou want to hang an object from the ceiling of an elevator that has a maximum acceleration of 4.0 m/s2. a) If you hang the object with a fishing line that supports 45 N of force, what is the maximum mass the object can have if the line is not to break? Please answer in units of kg. b) What TWO combinations of slowing down, speeding up, going up and going down causes the greatest force to be exerted on the fishing line?arrow_forward
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