Physics (5th Edition)
5th Edition
ISBN: 9780321976444
Author: James S. Walker
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 5.4, Problem 4EYU
A force F pushes on three boxes that slide without friction on a horizontal surface, as indicated in Figure 5-12. Box 1 has a mass of 1 kg, box 2 has a mass of 2 kg, and box 3 has a mass of 3 kg. The boxes are in contact, and slide as a group with an acceleration a. Is the magnitude of the force of contact between boxes 1 and 2 greater than, less than, or equal to the magnitude of the force of contact between boxes 2 and 3? Explain.
Figure 5-12 Enhance Your Understanding 4
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
a block of mass m is held stationary on a ramp by the frictional force on it from the ramp. A force , directed up the ramp, is then applied to the block and gradually increased in magnitude from zero. During the increase, what happens to the direction and magnitude of the frictional force on the block?
The force F, acting in a constant direction on the 17-kg block, has a magnitude which varies with the position s of the block. When s = 0 the block is moving to the right at v = 6 m/s. The coefficient of kinetic friction between the block and surface is μk = 0.3
a) Determine how far the block must slide before its velocity becomes 15 m/s.
THREE 5-KG PACKAGES A, B, AND C ARE
PLACED ON A CONVEYOR BELT THAT IS AT
REST. BETWEEN THE BELT AND BOTH
PACKAGES A AND C THE COEFFICIENTS OF
FRICTION ARE us =
BETWEEN PACKAGE B AND THE BELT THE
COEFFICIENTS ARE us =
0.30 AND uK = 0.20%3;
0.15 AND H = 0.10.
THE PACKAGES ARE PLACED ON THE BELT SO
THAT THEY ARE IN CONTACT WITH EACH
OTHER AND AT REST. DETERMINE WHICH, IF
ANY, OF THE PACKAGES WILL MOVE AND THE
FRICTION FORCE ACTING ON EACH PACKAGE.
%3D
5 kg
skg
5 kg
Chapter 5 Solutions
Physics (5th Edition)
Ch. 5.1 - Two forces have magnitudes F1 and F2. If these...Ch. 5.2 - Which of the following statements is correct? A: A...Ch. 5.3 - The acceleration of an object has a magnitude a....Ch. 5.4 - A force F pushes on three boxes that slide without...Ch. 5.5 - An object is acted on by a single force that is at...Ch. 5.6 - When a certain person steps onto a scale on solid...Ch. 5.7 - Figure 5-23 shows four identical bricks that are...Ch. 5 - Driving down the road, you hit the brakes...Ch. 5 - Youve probably seen pictures of someone pulling a...Ch. 5 - As you read this, you are most likely sitting...
Ch. 5 - When a dog gets wet, it shakes its body from head...Ch. 5 - A young girl slides down a rope. As she slides...Ch. 5 - A block of mass m hangs from a string attached to...Ch. 5 - An astronaut on a space walk discovers that his...Ch. 5 - Two untethered astronauts on a space walk decide...Ch. 5 - In Figure 5-25 Wilbur asks Mr. Ed, the talking...Ch. 5 - A whole brick has more mass than half a brick,...Ch. 5 - The force exerted by gravity on a whole brick is...Ch. 5 - Is it possible for an object at rest to have only...Ch. 5 - Is it possible for an object to be in motion and...Ch. 5 - A bird cage, with a parrot inside, hangs from a...Ch. 5 - Suppose you jump from the cliffs of Acapulco and...Ch. 5 - A friend tells you that since his car is at rest,...Ch. 5 - Since all objects are weightless in orbit, how is...Ch. 5 - To clean a rug, you can hang it from a clothesline...Ch. 5 - If you step off a high board and drop to the water...Ch. 5 - Is it possible for an object to be moving in one...Ch. 5 - Since a bucket of water is weightless in space,...Ch. 5 - In the movie The Rocketeer, a teenager discovers a...Ch. 5 - List three common objects that have a weight of...Ch. 5 - An object of mass m is initially at rest. After a...Ch. 5 - On a planet far, far away, an astronaut picks up a...Ch. 5 - In a grocery store, you push a 15.4-kg shopping...Ch. 5 - You are pulling your little sister on her sled...Ch. 5 - A 0.53-kg billiard ball initially at rest is given...Ch. 5 - A 92-kg water skier floating in a lake is pulled...Ch. 5 - A 0.5-kg object is acted on by a force whose x...Ch. 5 - Predict/Explain You drop two balls of equal...Ch. 5 - Predict/Calculate A 42.0-kg parachutist is moving...Ch. 5 - Predict/Calculate In baseball, a pitcher can...Ch. 5 - A major-league catcher gloves a 92 mi/h pitch and...Ch. 5 - Driving home from school one day, you spot a ball...Ch. 5 - Stopping a 747 A 747 jetliner lands and begins to...Ch. 5 - The Ux-versus-time graph for a 1.8-kg object is...Ch. 5 - Predict/Calculate A drag racer crosses the finish...Ch. 5 - Predict/Explain A small car collides with a large...Ch. 5 - Predict/Explain A small car collides with a large...Ch. 5 - As you catch a 0.14-kg ball it accelerates at...Ch. 5 - BIO Woodpecker Concussion Prevention A woodpecker...Ch. 5 - On vacation, your 1400-kg car pulls a 560-kg...Ch. 5 - Predict/Calculate An 85-kg parent and a ?4-kg...Ch. 5 - A force of magnitude 7.50 N pushes three boxes...Ch. 5 - A force of magnitude 7.50 N pushes three boxes...Ch. 5 - Predict/Calculate Two boxes sit side-by-side on a...Ch. 5 - A skateboarder on a ramp is accelerated by a...Ch. 5 - Three objects, A, B, and C, have x and y...Ch. 5 - A farm tractor tows a 3300-kg trailer up a 14...Ch. 5 - A shopper pushes a 7 5-kg shopping cart up a 13...Ch. 5 - Two crewmen pull a rail through a lock, as shown...Ch. 5 - A hockey puck is acted on by one or more forces as...Ch. 5 - To give a 19-kg child a ride, two teenagers pull...Ch. 5 - Predict/Calculate A 65-kg skier speeds down a...Ch. 5 - An object acted on by three forces moves with...Ch. 5 - A train is traveling up a 2 88 incline at a speed...Ch. 5 - The Force Exerted on the Moon In Figure 5-37 we...Ch. 5 - You pull upward on a stuffed suitcase with a force...Ch. 5 - BIO Brain Growth A newborn babys brain grows...Ch. 5 - Suppose a rocket launches with an acceleration of...Ch. 5 - During an episode of turbulence in an airplane you...Ch. 5 - At the bow of a ship on a stormy sea, a crewman...Ch. 5 - Predict/Calculate As part of a physics experiment...Ch. 5 - When you weigh yourself on good old terra firma...Ch. 5 - Predict/Calculate BIO Flight of the Samara A...Ch. 5 - When you lift a bowling ball with a force of 82 N,...Ch. 5 - A 23-kg suitcase is pulled with constant speed by...Ch. 5 - (a) Draw a free-body diagram for the skier in...Ch. 5 - A 9.3-kg child sits in a 3.7-kg high chair. (a)...Ch. 5 - Figure 5-39 shows the normal force N experienced...Ch. 5 - Figure 5-40 shows the normal force N as a function...Ch. 5 - A 5.0-kg bag of potatoes sits on the bottom of a...Ch. 5 - Predict/Calculate (a) Find the normal force...Ch. 5 - Predict/Calculate A gardener mows a lawn with an...Ch. 5 - Figure 5-41 Problems 53 53 An ant walks slowly...Ch. 5 - CE Predict/Explain Riding in an elevator moving...Ch. 5 - CE Predict/Explain Riding in an elevator moving...Ch. 5 - CE Give the direction of the net force acting on...Ch. 5 - CE Predict/Explain You jump out of an airplane and...Ch. 5 - In a tennis serve, a 0.070-kg ball can be...Ch. 5 - BIO Human Heart Force The left ventricle of the...Ch. 5 - A 51 5-kg swimmer with an initial speed of 1.25...Ch. 5 - The ax-versus-time graph for a 2.0-kg object is...Ch. 5 - A skateboarder starts from rest and rolls down a...Ch. 5 - The rotors of a 15,200-kg heavy-lift helicopter...Ch. 5 - As it pulls itself up to a branch, a chimpanzee...Ch. 5 - CE Each of the three identical hockey pucks shown...Ch. 5 - Predict/Calculate The VASIMR Rocket NASA plans to...Ch. 5 - An object of mass m = 5.95 kg has an acceleration...Ch. 5 - At the local grocery store, you push a 14.5-kg...Ch. 5 - BIO Predict/Calculate The Force of Running...Ch. 5 - BIO Predict/Calculate Grasshopper Liftoff To...Ch. 5 - Takeoff from an Aircraft Carrier On an aircraft...Ch. 5 - The Ux-versus-time graph for a 1.8-kg object is...Ch. 5 - Predict/Calculate An archer shoots a 0.024-kg...Ch. 5 - An apple of mass m = 0.13 kg falls out of a tree...Ch. 5 - BIO The Fall of T. rex Paleontologists estimate...Ch. 5 - Deep Space 1 The NASA spacecraft Deep Space 1 was...Ch. 5 - Your groceries are in a bag with paper handles....Ch. 5 - BIO A Leafhopper's Leap The motion of jumping...Ch. 5 - Predict/Calculate At the airport, you observe some...Ch. 5 - Prob. 80GPCh. 5 - Two boxes are at rest on a smooth, horizontal...Ch. 5 - You have been hired to help improve the material...Ch. 5 - Prob. 83GPCh. 5 - A baseball of mass m and initial speed U strikes a...Ch. 5 - When two people push in the same direction on an...Ch. 5 - An air-track cart of mass m1 = 0.14 kg is moving...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - BIO Increasing Safety in a Collision Safety...Ch. 5 - Predict/Calculate Referring to Example 5-8 Suppose...Ch. 5 - Referring to Example 5-8 Suppose the force of 30.0...Ch. 5 - Predict/Calculate Referring to Figure 5-13 Suppose...Ch. 5 - Predict/Calculate Referring to Figure 5-13 Suppose...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Which of the following statements about the general functions of the nervous system is false?
The three primary...
Human Anatomy & Physiology (2nd Edition)
Choose the best answer to each of the following. Explain your reasoning. According to Keplers third law. (a) Me...
Cosmic Perspective Fundamentals
1.1 Write a one-sentence definition for each of the following:
a. chemistry
b. chemical
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
The bioremediation process shown in the photograph is used to remove benzene and other hydrocarbons from soil c...
Microbiology: An Introduction
58. Is each compound soluble or insoluble? For the soluble compounds, identify the ions present in solution.
a....
Introductory Chemistry (6th Edition)
a. How can aspirin be synthesized from benzene? b. Ibuprofen is the active ingredient in pain relievers such as...
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
- A cart (A) is connected by a massless string to a box with a rubber bottom (B). Box B has a mass of 25 kg and coefficients of friction μs = 0.7 and μk = 0.35 while cart A can be considered frictionless. The system is at rest initially on an incline and the string is parallel to the incline. 1.) Block B is held in place and the mass in cart A is increased. If the maximum tension the cable can have is 200 N, what is the maximum mass cart A can have? 2.) Cart A is given a mass of 8kg and block B is released. What is the acceleration of the system? (Hint: Your mass should be well above 8 kg. The string stays intact for this part.)arrow_forwardA block M1 of mass 10.0 kg sits on top of a larger block M2 of mass 20.0 kg which sits on a flat surface. The kinetic friction coefficient between the upper and lower block is 0.440. The kinetic friction coefficient between the lower block and the flat surface is 0.140. A horizontal force F= 97 N pushes against the upper block, causing it to slide. The friction force between the blocks then causes the lower block to slide also. What is the magnitude of the acceleration of the upper block? What is the magnitude of the acceleration of the lower block?arrow_forwardTwo identical balls of mass m are attached to the ends of a massless rod of length L. The rod is placed in a corner in its vertical position and we movethe lower ball in the horizontal direction with constant speed v. The rod moves in the vertical plane, the friction is negligible everywhere.a) Give the speed and acceleration of the upper ball as a function of the angle α between the rod and the horizontal.b) Give the normal force exerted by the wall as a function of α.c) At which angle α* will the upper ball lose the contact with the wall? Calculate α∗ if L = 1,0 m and v = 0,20 m/sarrow_forward
- Four people are attempting to move a stage platform across the floor. If they exert the horizontal forces shown, determine (a) the equivalent force-couple system at O and (b) the points on the x- and y-axes through which the line of action of the single resultant force R passes. Assume F1-69 lb, F2-60 lb, F3-32 lb. F4-61 lb,a-75 in, b-60 in, and = 47° F₁ F₁- Answers: (a) The force-couple system at O R= b Mo- (i i (b) The line of action of the single resultant R: On the x-xx- On the y-axis y i klb-in in. in.arrow_forward4-5. Rollers A and B each weigh 200 N (Figure P4-5). Assume smooth surfaces and draw a free-body diagram of roller A. FIGURE P4-5 70⁰ 45%arrow_forwardTwo forces, F1=20 N and F2=10 N, are acting on a block of mass 5kg sitting on a horizontal surface with coefficient of kinetic friction k = 0.17. The block moved to + x-axes, what is themagnitude of: a) the normal force? b) the friction force? c) the net force on the block? d) the resulting acceleration of the block?arrow_forward
- Four people are attempting to move a stage platform across the floor. If they exert the horizontal forces shown, determine (a) the equivalent force-couple system at O and (b) the points on the x- and y-axes through which the line of action of the single resultant force R passes. Assume F₁-71 lb, F2-61 lb, F3-39 lb. F4-51 lb, a-74 in., b-60 in., and 0 = 47° F₁ ΤΑ B. F₂ F₁ Answers: (a) The force-couple system at O: R= (i it i j) lb Mo- i k lb-in. (b) The line of action of the single resultant R: On the x-axis x- On the y-axis y i 10 8 in. in.arrow_forwardBlocks A and B each have 13 kg mass. All contact surfaces have the same coefficient of friction. Determine the force P in N needed to cause impending motion of block B to the left if the coefficient of static friction is 0.3.arrow_forwardA 2.0 kg block rests on a level surface. The coefficient of static friction is μk =0.60 , and the coefficient of kinetic friction is μ k =0.40.A horizontal force, F, is applied to the block As increased, the block begins moving. Describe how the force of friction varies as F increases from the moment the block is at rest to when it begins moving. Indicate how you could determine the force of friction at each value of F--before the block starts moving, at the point it starts moving and after it is moving. Show your work.arrow_forward
- A hockey puck on a frozen pond is given an initial speed of 20 m/s. If the puck always remains on the ice and slides 115 m before coming to rest, determine the coefficient of kinetic friction between the puck and ice.arrow_forwardA hot-air balloon of mass 220 kg is descending vertically with downward acceleration of magnitude 1.4 m/s?. How much mass (ballast) must be thrown out to give the balloon an upward acceleration of magnitude 1.4 m/s² (same magnitude but opposite direction)? Assume that the upward force from the air (the lift) does not change because of the decrease in mass. Number i Unitsarrow_forwardA block of mass m is sitting on a block of mass M. The bottom block is sitting on a horizontal floor. The coefficient of static friction between the blocks is μs1, and the coefficient of static friction between the bottom block and the floor is μs2. What is the minimum pull force F on the bottom block so that the blocks begin to move? Given that the coefficient of kinetic friction between the bottom block and the floor is μk, what is the maximum pull force F so that there is no slipping between the blocks?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Classical Dynamics of Particles and SystemsPhysicsISBN:9780534408961Author:Stephen T. Thornton, Jerry B. MarionPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
Classical Dynamics of Particles and Systems
Physics
ISBN:9780534408961
Author:Stephen T. Thornton, Jerry B. Marion
Publisher:Cengage Learning
Drawing Free-Body Diagrams With Examples; Author: The Physics Classroom;https://www.youtube.com/watch?v=3rZR7FSSidc;License: Standard Youtube License