Conceptual Physics (12th Edition)
12th Edition
ISBN: 9780321909107
Author: Paul G. Hewitt
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 5, Problem 66RCQ
Here the stone is sliding down a friction-free incline.
(a) Identify the forces that act on it, and draw appropriate force vectors, (b) Use the parallelogram rule to construct the resultant force on the stone (carefully showing that it has a direction parallel to the incline-the same direction as the stone’s acceleration).
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A block has a mass of M equals 3.5 KG rests on a horizontal plane. The coefficient of static friction, US is 0.15. A horizontal force, F, is applied to the block, and it’s just enough to get the block to begin moving. (A) given the coordinate system specified in the problem statement, write an expression for the sum of the forces in the wide direction. (B) write an expression to show the relationship between the maximum friction force, FF, in the normal force, FN. (C) calculate the magnitude of F, in newtons, if FF is at its maximum.
In order to prevent muscle contraction from misaligning bones during healing (which can cause a permanent limp), injured or broken legs must be supported horizontally and at the same time kept under tension (traction) directed along the leg. One version of a device to accomplish this aim, the Russell traction apparatus, is shown in the figure. This system allows the apparatus to support the full weight of the injured leg and at the same time provide the traction along the leg.
If the leg to be supported weighs 45.0 N , what must be the weight of W?
What traction force does this system produce along the leg?
You are trying to slide a sofa across a horizontal floor. The mass of the sofa is 2.0 x 102kg, and you
need to exert a force of 3.5 x 102N to make it just begin to move. (a) Calculate the coefficient of static friction between the floor and the sofa.(b) After it starts moving, the sofa reaches a speed of 2.0 m/s after 5.0 s. Calculate the coefficient of kinetic friction between the sofa and the floor.
Chapter 5 Solutions
Conceptual Physics (12th Edition)
Ch. 5 - When you push against a wall with your fingers,...Ch. 5 - A boxer can hit a heavy bag with great force. Why...Ch. 5 - How many forces are required for an interaction?Ch. 5 - Prob. 4RCQCh. 5 - Consider hitting a baseball with a bat. If we call...Ch. 5 - Prob. 6RCQCh. 5 - Prob. 7RCQCh. 5 - Prob. 8RCQCh. 5 - Prob. 9RCQCh. 5 - Earth pulls down on you with a gravitational force...
Ch. 5 - Prob. 11RCQCh. 5 - Prob. 12RCQCh. 5 - Prob. 13RCQCh. 5 - Prob. 14RCQCh. 5 - Prob. 15RCQCh. 5 - Prob. 16RCQCh. 5 - Prob. 17RCQCh. 5 - Prob. 18RCQCh. 5 - Prob. 19RCQCh. 5 - Prob. 20RCQCh. 5 - Prob. 21RCQCh. 5 - Prob. 22RCQCh. 5 - Prob. 23RCQCh. 5 - Prob. 24RCQCh. 5 - Prob. 25RCQCh. 5 - Prob. 26RCQCh. 5 - Prob. 27RCQCh. 5 - Prob. 28RCQCh. 5 - Prob. 29RCQCh. 5 - Prob. 30RCQCh. 5 - 31. A van exerts a force on trailers of different...Ch. 5 - a. The accelerations of the boxes
b. The...Ch. 5 - 33. Three identical pucks, A, B, and C, are...Ch. 5 - Prob. 34RCQCh. 5 - 35. The photo shows Steve Hewitt and daughter...Ch. 5 - Prob. 36RCQCh. 5 - Prob. 37RCQCh. 5 - Prob. 38RCQCh. 5 - Prob. 39RCQCh. 5 - Prob. 40RCQCh. 5 - Prob. 41RCQCh. 5 - Prob. 42RCQCh. 5 - Prob. 43RCQCh. 5 - Prob. 44RCQCh. 5 - Prob. 45RCQCh. 5 - Prob. 46RCQCh. 5 - Prob. 47RCQCh. 5 - Prob. 48RCQCh. 5 - Prob. 49RCQCh. 5 - Suppose that two carts, one twice as massive as...Ch. 5 - Prob. 51RCQCh. 5 - Prob. 52RCQCh. 5 - Prob. 53RCQCh. 5 - Prob. 54RCQCh. 5 - Prob. 55RCQCh. 5 - Prob. 56RCQCh. 5 - Prob. 57RCQCh. 5 - Prob. 58RCQCh. 5 - Prob. 59RCQCh. 5 - Prob. 60RCQCh. 5 - Prob. 61RCQCh. 5 - Prob. 62RCQCh. 5 - The same stone is being accelerated vertically...Ch. 5 - Prob. 64RCQCh. 5 - Prob. 65RCQCh. 5 - Here the stone is sliding down a friction-free...Ch. 5 - The stone is at rest, interacting with both the...Ch. 5 - Prob. 68RCQCh. 5 - Prob. 69RCQCh. 5 - Prob. 70RCQCh. 5 - Prob. 71RCQCh. 5 - Prob. 72RCQCh. 5 - Prob. 73RCQCh. 5 - Prob. 74RCQCh. 5 - Prob. 75RCQCh. 5 - Prob. 76RCQCh. 5 - Prob. 77RCQCh. 5 - Prob. 78RCQCh. 5 - Prob. 79RCQCh. 5 - The strong man can withstand the tension force...
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 makeshift sign hangs by a wire that is extended over an ideal pulley and is wrapped around a large potted plant on the roof as shown in Figure P6.10. When first set up by the shopkeeper on a sunny and dry day, the sign and the pot are in equilibrium. Is it possible that the sign falls to the ground during a rainstorm while still remaining connected to the pot? What would have to be true for that to be possible? FIGURE P6.10 Problems 10 and 11.arrow_forwardA 2 kg aluminum block and a 6 kg copper block are connected by a light string over a frictionless pulley. The two blocks are allowed to move on a fixed steel block wedge (of angle 6 = 35°) as shown in the Fig. (2). The coefficient of 25 kinetic friction for each block is shown in the figure. Determine: (a) The acceleration of the two blocks. (b) The tension in the string. Aluminum Copper H = 0.47 Steel H =0.36 Fig. 2 2.arrow_forwardKarev is lowering two boxes, one on top of the other, down the ramp, as shown in the figure, by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 15 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.444, and the coefficient of static friction between the two boxes is 0.800. (b) What are the magnitude of the friction force on the upper box?arrow_forward
- While a person is walking, his arms {with typical lengths 70 cm measured from the shoulder joint) swing through approximately a 45 angle in 0.5 s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. Find the magnitude of the force that the blood vessel must exert on the drop of blood. Express your answer using two significant figures. Find the direction of the force that the blood vessel must exert on the drop of blood What force would the blood vessel exert if the arm were not swinging? Express your answer using two significant figures. Mars rotates on its axis once every 24.8 hours, its mass is 6.42 Times 1023 kg and its radius is 3.37 Times 106 m What is the free-fall acceleration on Mars? Express your answer using three significant figures. Estimate the maximum speed that an astronaut can walk on the surface of Mars. Express your answer using two significant figures.arrow_forwardKarev is lowering two boxes, one on top of the other, down the ramp, as shown in the figure, by pulling on a rope parallel to the surface of the ramp. Both boxes move together at a constant speed of 15 cm/s. The coefficient of kinetic friction between the ramp and the lower box is 0.444, and the coefficient of static friction between the two boxes is 0.800. (a) What force do you need to exert to accomplish this?arrow_forwardA 12 N horizontal force F pushes a block weighing 5.3 N against a vertical wall (see the figure). The coefficient of static friction between the wall and the block is 0.61, and the coefficient of kinetic friction is 0.48. Assume that the block is not moving initially. (a) Will the block move? ("yes" or "no") |(b) In unit-vector notation what is the force on the block from the wall?arrow_forward
- As a fish jumps vertically out of the water, assume that only two significant forces act on it: an upward force F exerted by the tail fin and the downward force due to gravity. A record Chinook salmon has a length of 1.50 m and a mass of 61.0 kg. If this fish is moving upward at 3.00 m/s as its head first breaks the surface and has an upward speed of 6.00 m/s after two-thirds of its length has left the surface, assume constant acceleration and determine (a) the salmon’s acceleration and (b) the magnitude of the force F during this interval.arrow_forwardIn the figure, a 50 kg rock climber is climbing a “chimney" between two rock slabs. The coefficient of static friction between her shoes and the rock is 1.13; between her back and the rock it is 0.878. She has reduced her push against the rock until her back and her shoes are on the verge of slipping. (a) What is the magnitude of each of her forces of push against the two columns of rock? (b) What fraction of her weight is supported by the frictional force on her shoes? (a) Number (b) Number IN Units Units <arrow_forwardAs a fish jumps vertically out of the water, assume that only two significant forces act on it: an upward force F exerted by the tail fin and the downward force due to gravity. A record Chinook salmon has a length of 1.50 m and a mass of 54.5 kg. If this fish is moving upward at 3.00 m/s as its head first breaks the surface and has an upward speed of 6.30 m/s after two-thirds of its length has left the surface, assume constant acceleration and determine the following. (a) the salmon's acceleration m/s2 upward (b) the magnitude of the force F during this intervalarrow_forward
- A person pushes a large block on a horizontal ice surface in a straight line to the right with constant speed, as shown above. The mass of the block is 10�� and frictional forces between the block and the ice are negligible. However, the block has a wide cross-sectional area such that air resistance acting on the block cannot be neglected. The opposite is true for the person: air resistance on the person is negligible, but the person’s shoes do not slip on the ice. The table shows the force exerted by the person on the block for several values of constant speed.arrow_forwardTwo forces have the same magnitude F and they act on the same body.Sketch the free-body diagram and solve for the angle between them if any,when the vector sum of the forces has a magnitude of (a) 2F, (b) √2F and (c) zero.arrow_forwardas a fish jump vertically out of the water, assume that only two significant forces act on it: an upward force F exerted by the tail fin and the downward force due to gravity. a force chinook salmon has a length of 1.50 m and a mass of 48.5 kg. if the fish is moving upward at 3.00 m/s as its head first breaks the surface and has an upward speed of 5.80 m/s after two-thirds of its length has left the surface, assume constant acceleration and determine the following. a. the salmon's acceleration b. the magnitude of the force F during this intervalarrow_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 LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author: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
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Newton's First Law of Motion: Mass and Inertia; Author: Professor Dave explains;https://www.youtube.com/watch?v=1XSyyjcEHo0;License: Standard YouTube License, CC-BY