College Physics: A Strategic Approach (3rd Edition)
3rd Edition
ISBN: 9780321879721
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 4, Problem 20CQ
Suppose that, while in a squatting position, you stand on your hands, and then you pull up on your feet with a great deal of force. You are applying a large force to the bottoms of your feet, but no matter how strong you are, you will never be able to lift yourself off the ground. Use your understanding of force and motion to explain why this is not possible.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Suppose that, while in a squatting position, you stand on your hands, and then you pull up on your feet with a great deal of force. You are applying a large force to the bottoms of your feet, but no matter how strong you are, you will never be able to lift yourself off the ground. Use your understanding of force and motion to explain why this is not possible.
Is it possible for an object to achieve equilibrium when there is only one force acting on it?
No, only one force will not be enough to move an object.
Yes, normal force can make an object stay in equilibrium.
No, only one force will create acceleration on an object.
Yes, gravitational force can make an object stay in equilibrium.
QUESTION 1: If you can exert a pull that is greater than your weight, why can’t you fly off the ground by pulling your belt upward?
because the Earth will pull you downward with the same force, so they cancel out
because your body exerts the same amount of force on you, so they cancel out
because the normal force and your weight cancel out just before you pull your belt upward
not enough information is given
QUESTION 2: You are pushing a box to the right with a 210-N force. How much force does the box exert on you?
less than 210 N, to the left
equal to 210 N, to the left
equal to 210 N, to the right
greater than 210 N, to the left
Chapter 4 Solutions
College Physics: A Strategic Approach (3rd Edition)
Ch. 4 - If an object is not moving, does that mean that...Ch. 4 - An object moves in a straight line at a constant...Ch. 4 - If you know all of the forces acting on a moving...Ch. 4 - Three arrows are shot horizontally. They have left...Ch. 4 - A carpenter wishes to tighten the heavy head of...Ch. 4 - Internal injuries in vehicular acci-dents may be...Ch. 4 - Heres a great everyday use of the physics...Ch. 4 - Suppose you are an astronaut in deep space, far...Ch. 4 - Jonathan accelerates away from a stop sign. His...Ch. 4 - Normally, jet engines push air out the back of the...
Ch. 4 - If you are standing still, the upward normal force...Ch. 4 - Josh and Taylor, standing face-to-face on...Ch. 4 - A person sits on a sloped hillside. Is it ever...Ch. 4 - Walking without slipping requires a static...Ch. 4 - Figure 4.30 b showed a situation in which the...Ch. 4 - Alyssa pushes to the right on a filing cabinet;...Ch. 4 - A very smart three-year-old child is given a wagon...Ch. 4 - The tire on this drag racer is severely twisted:...Ch. 4 - Suppose that, while in a squatting position, you...Ch. 4 - A block has acceleration a when pulled by a...Ch. 4 - A 5.0 kg block has an acceleration of 0.20 m/s2...Ch. 4 - Tennis balls experience a large drag force. A...Ch. 4 - A group of students is making model cars that will...Ch. 4 - A person gives a box a shove so that it slides up...Ch. 4 - A person is pushing horizontally on a box with a...Ch. 4 - As shown in the chapter, scallops use jet...Ch. 4 - Dave pushes his four-year-old son Thomas across...Ch. 4 - Figure Q4.29 shows block A sitting on top of block...Ch. 4 - Whiplash injuries during an automobile accident...Ch. 4 - An automobile has a head-on collision. A passenger...Ch. 4 - In a head-on collision, an infant is much safer in...Ch. 4 - Problems 4 through 6 show two forces acting on an...Ch. 4 - Problems 4 through 6 show two forces acting on an...Ch. 4 - Problems 4 through 6 show two forces acting on an...Ch. 4 - A mountain climber is hanging from a vertical...Ch. 4 - You look up from your textbook and observe a...Ch. 4 - A baseball player is sliding into second base....Ch. 4 - A jet plane is speeding down the runway during...Ch. 4 - A skier is sliding down a 15 slope. Friction is...Ch. 4 - A falcon is hovering above the ground, then...Ch. 4 - Figure P4.13 shows an acceleration-versus-force...Ch. 4 - A constant force applied to object A causes it to...Ch. 4 - A compact car has a maximum acceleration of 4.0...Ch. 4 - A constant force is applied to an object, causing...Ch. 4 - A constant force is applied to an object, causing...Ch. 4 - A man pulling an empty wagon causes it to...Ch. 4 - A car has a maximum acceleration of 5.0 m/s2 What...Ch. 4 - Scallops eject water from their shells to provide...Ch. 4 - Figure P4.21 shows an objects...Ch. 4 - In t-ball, young players use a bat to hit a...Ch. 4 - Two children fight over a 200 g stuffed bear. The...Ch. 4 - A 1500 kg car is traveling along a straight road...Ch. 4 - The motion of a very massive object can be...Ch. 4 - Very small forces can have tremendous effects on...Ch. 4 - Problems 27 through 29 show a free-body diagram....Ch. 4 - Problems 27 through 29 show a free-body diagram....Ch. 4 - Problems 27 through 29 show a free-body diagram....Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Three ice skaters, numbered 1, 2, and 3, stand in...Ch. 4 - A girl stands on a sofa. Identify all the...Ch. 4 - A car is skidding to a stop on a level stretch of...Ch. 4 - Squid use jet propulsion for rapid escapes. A...Ch. 4 - Redraw the motion diagram shown in Figure P4.43,...Ch. 4 - Redraw the motion diagram shown in Figure P4.44,...Ch. 4 - Redraw the motion diagram shown in Figure P4.45,...Ch. 4 - Redraw the motion diagram shown in Figure P4.46,...Ch. 4 - A student draws the flawed free-body diagram shown...Ch. 4 - A student draws the flawed free-body diagram shown...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - A bag of groceries is on the back seat of your car...Ch. 4 - A car has a mass of 1500 kg. If the driver applies...Ch. 4 - A rubber ball bounces. Wed like to understand how...Ch. 4 - If a car stops suddenly, you feel thrown forward....Ch. 4 - The fastest pitched baseball was clocked at 46...Ch. 4 - The froghopper, champion leaper of the insect...Ch. 4 - A beach ball is thrown straight up, and some time...Ch. 4 - If your car is stuck in the mud and you dont have...Ch. 4 - If your car is stuck in the mud and you don't have...Ch. 4 - If your car is stuck in the mud and you don't have...Ch. 4 - If your car is stuck in the mud and you don't have...
Additional Science Textbook Solutions
Find more solutions based on key concepts
DRAW IT Each female of a particular fish species produces millions of eggs per year. Draw and label the most l...
Campbell Biology (11th Edition)
Choose the best answer to each of the following. Explain your reasoning. Based on current data, planetary syste...
Cosmic Perspective Fundamentals
Match each of the following items with all the terms it applies to:
Human Physiology: An Integrated Approach (8th Edition)
What name is given to the zone of greatest seismic activity?
Applications and Investigations in Earth Science (9th Edition)
A Slice of pizza has 500 kcal. If we could burn the pizza and use all the heat to warm a 50-L container of cold...
Campbell Biology in Focus (2nd Edition)
Which compound is more easily decarboxylated?
Organic Chemistry (8th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Does the ground need to exert a force on you for you to jump off the ground, or do you need to exert a force on the ground? If the ground must exert a force on you, is that force greater than the force you exert on the ground?arrow_forwardDuring 4th period Jada was a beast. She resisted the forces applied by 5 people in his class all at once. Each person applied a force of 17 N and Jada still did not move. How much force was Jada pushing back with? O 85 N 55 N 65 N O 95 Narrow_forwardA person is pushing two boxes placed side by side with each other. What is the acceleration caused by the applied force if the net force is 200.57 N, the coefficient of kinetic friction of the boxes is 0.085 and the sum of the mass of the boxes is 88.89 kg? Is it possible to have one of the boxes generate an applied force of 140.7 N, if yes, what is the mass of the other box? Show an Illustration.arrow_forward
- Part 1. We will use a three-wheeled cart on a flat and smooth table. A string is attached to the front of the cart. The other end of the string was wrapped around a smooth pulley with a wight hanger attached to the other end. When we mention the smooth surface of the table and smooth pulley, it means that there is no frictional force affecting the motion. If we add different mass on the weight hanger, we are applying a different pulling force on the cart through the string. If you are given the mass of the cart and given the magnitude of the force, you can calculate the acceleration. We will gradually add the mass on the weight hanger, so we are gradually increasing the pulling force. For each force, you can calculate the acceleration. Force (F) on the cart, Newton Mass (m) of the Cart, kg acceleration=FmFm 1 0.5 1.2 2 1.0 1.2 3 1.5 1.2 4 2.0 1.2 5 2.5 1.2 6 3.0 1.2 You also need plot a graph with acceleration as y-axis and Force as…arrow_forwardThe figure below shows a bird feeder that weighs 189.7 N. The feeder is supported by a vertical string, which is in turn tied to two strings, each of which is attached to a horizontal branch. The left string makes a 60° angle with the branch, while the right string makes a 30° angle. What is the tension in each string (in N)? left string right string bottom string 60° Bird food 30° N Narrow_forwardThree blocks A, B, and C stand next to each other as shown in the figure. A force F with magnitude 137.1 N is applied to push block C directly and sends the blocks accelerating to the right. Let's assume there is no friction between the blocks and the ground. The mass of A, B, and C are 9.1, 46.6, and 84.3 kg, respectively. What is the force applied on block B by block A (in unit of N)?arrow_forward
- A car is moving along a frictionless surface with a speed of 2 m/s to the left. You and your friend each come over and push the car at the same time. You exert a force of 6 N to the left, while your friend exerts a force of 6 N to the right. According to Newton’s first law, how will this action affect the car’s motion? The car will speed up because your force is in the same direction of the car’s motion, making it speed up. The car will stop immediately because two balanced forces will cause an object to stop moving. The car will continue to move 2 m/s to the left because there are balanced forces acting on it. The car will continue moving to the left but at a slower speed because your friend’s force is going to make the car slow down.arrow_forwardHow 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 answerarrow_forwardBelow are eight crates of different mass. (Figure 1) The crates are attached to massless ropes, as indicated in the picture, where the ropes are marked by letters. Each crate is being pulled to the right at the same constant speed. The coefficient of kinetic friction between each crate and the surface on which it slides is the same for all eight crates. igure 1 kg 3 kg с F 2 kg 2 kg B 3 kg E D ………………1 kg …………………..mm 3 kg A 5 kg G H 1 of 1 Rank the ropes on the basis of the force each exerts on the crate immediately to its left. Rank from largest to smallest. To rank items as equivalent, overlap them. ► View Available Hint(s) largest The correct ranking cannot be determined. Submit ABCDEFGH Provide Feedback Reset Help smallestarrow_forward
- Three blocks A, B, and C stand next to each other as shown in the figure. A force F with magnitude 199.4 N is applied to push block C directly and sends the blocks accelerating to the right. Let's assume there is no friction between the blocks and the ground. The mass of A, B, and C are 7, 45, and 94.7 kg, respectively. What is the force applied on block B by block C (in unit of N)? C A Textarrow_forwardNewton's third law tells us that for every force in nature, there is an equal and opposite reaction force. In the previous question ("A crate is sitting at a top of a ramp, which is inclined at an angle"), what is the reaction force associated with the normal force acting on the box? O The weight force acting on the crate O The component of the weight force perpendicular to the surface O The normal force exerted by the crate on the ramp O The static friction force O Some other force O There is no reaction force to the normal forcearrow_forwardA box filled with appliances rests on a floor. Only gravity and the support force of the floor act on it. When a slight pull P is exerted on the box but not enough to move it, the force of friction would be: A equal to P B less than P greater than P zeroarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Newton's Third Law of Motion: Action and Reaction; Author: Professor Dave explains;https://www.youtube.com/watch?v=y61_VPKH2B4;License: Standard YouTube License, CC-BY