Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
4th Edition
ISBN: 9780133953145
Author: Randall D. Knight (Professor Emeritus)
Publisher: PEARSON
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Chapter 5, Problem 2CQ
A compressed spring is pushing a block across a rough horizontal table. How many force vectors would be shown on a free-body diagram? Name them.
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Two blocks of masses m and m2 (m1 > m2) are placed on a frictionless table in contact with each other. A horizontal force of magnitude F is applied to the block of mass m, in the figure below.
F
(a) If P is the magnitude of the contact force between the blocks, draw the free-body diagrams for each block. (Do this on paper. Your instructor may ask you to turn in this work.)
(b) What is the net force on the system on the system consisting of both blocks? (Use the following as necessary: P and F.)
Fnet
(c) What is the net force acting on m1? (Use the following as necessary: P and F.)
Fnet,1 =
(d) What is the net force acting on m2? (Use the following as necessary: P and F.)
Fnet,2 =
(e) Write the x-component of Newton's second law for each block. (Do this on paper. Your instructor may ask you to turn in this work.)
(f) Solve the resulting system of two equations and two unknowns, expressing the acceleration a and contact force P in terms of the masses and force. (Use the following as…
The "Giant Swing" at a county fair consists of a vertical central shaft with a number of horizontal arms attached at its upper end as shown in (Figure 1). Each arm supports a seat suspended from a 5.00-mm-long rod, the upper end of which is fastened to the arm at a point RRR = 1.80 mm from the central shaft.
a)Make a free-body diagram of the seat, including the person in it. Draw the force vectors with their tails starting from the center of the dot. The location and orientation of your vectors will be graded. The exact length of your vectors will not be graded.
b)Find the time of one revolution of the swing if the rod supporting the seat makes an angle of θθtheta = 32.0 ∘with the vertical.
Chapter 5 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (Chs 1-42) Plus Mastering Physics with Pearson eText -- Access Card Package (4th Edition)
Ch. 5 - An elevator suspended by a cable is descending at...Ch. 5 - A compressed spring is pushing a block across a...Ch. 5 - A brick is falling from the roof of a three-story...Ch. 5 - In FIGURE Q5.4 block B is falling and dragging...Ch. 5 - You toss a ball straight up in the air....Ch. 5 - A constant force applied to A causes A to...Ch. 5 - An object experiencing a constant force...Ch. 5 - An object experiencing a constant force...Ch. 5 - If an object is at rest, can you conclude that...Ch. 5 - If a force is exerted on an object, is it possible...
Ch. 5 - Is the statement “An object always moves in the...Ch. 5 - Prob. 12CQCh. 5 -
13. Is it possible for the friction force on an...Ch. 5 -
14. Suppose you press your physics book against...Ch. 5 - FIGURE Q5.15 shows a hollow tube forming...Ch. 5 - Prob. 16CQCh. 5 - Which of the following are inertial reference...Ch. 5 - Prob. 1EAPCh. 5 - Prob. 2EAPCh. 5 - A baseball player is sliding into second base....Ch. 5 - Prob. 4EAPCh. 5 -
5. An arrow has just been shot from a bow and is...Ch. 5 - Two rubber bands cause an object to accelerate...Ch. 5 - Two rubber bands pulling on an object cause it to...Ch. 5 - FIGURE EX5.8 shows acceleration-versus-force graph...Ch. 5 - Prob. 9EAPCh. 5 - Prob. 10EAPCh. 5 - Prob. 11EAPCh. 5 - FIGURE EX5.12 shows an acceleration-versus-force...Ch. 5 - Prob. 13EAPCh. 5 -
14. FIGURE EX5.14 shows the acceleration of...Ch. 5 - Prob. 15EAPCh. 5 - Prob. 16EAPCh. 5 - Prob. 17EAPCh. 5 - Exercise 17 trough 19 show two of the three forces...Ch. 5 - Exercise 17 trough 19 show two of the three forces...Ch. 5 - Prob. 20EAPCh. 5 - Prob. 21EAPCh. 5 - Prob. 22EAPCh. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 -
Exercise 23 through 27 describe a situation. For...Ch. 5 -
Exercise 23 through 27 describe a situation. For...Ch. 5 - Exercise 23 through 27 describe a situation. For...Ch. 5 - Prob. 28EAPCh. 5 - Prob. 29EAPCh. 5 - Prob. 30EAPCh. 5 - Prob. 31EAPCh. 5 - A single force with x-component Fxacts on a 500 g...Ch. 5 - A constant force is applied to an object, causing...Ch. 5 - A constant force is applied to an object, causing...Ch. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - through 40 show a free-body diagram. For each:...Ch. 5 - Prob. 37EAPCh. 5 - Prob. 38EAPCh. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - Problem 35 through 40 show a free-body diagram....Ch. 5 - In lab, you propel a cart with four known forces...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - Problems 42 through 52 describe a situation. For...Ch. 5 - The leaf hopper, champion jumper of the insect...Ch. 5 - Prob. 54EAPCh. 5 -
55. A heavy boxy is in the back of a truck. The...Ch. 5 - If a car stops suddenly, you feel “thrown...Ch. 5 - Prob. 57EAP
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- A block of mass m = 3.50 kg is pushed d = 3.00 m along a rough horizontal table by a constant applied force of magnitude F = 10.0 N directed at an angle 60 = 30.0° below the horizontal as shown in the figure below. Draw a free-body diagram that will enable you to solve the problem. Please include the horizontal and vertical components of applied force.arrow_forwardA 5.00-kg block is placed on top of a 10.0-kg block (see the Figure below). A horizontal force of 45.0 N is applied to the 10-kg block, and the 5.00-kg block is tied to the wall by a string. The coefficient of kinetic friction between all moving surfaces is 0.200. (a) Draw a free-body diagram for each block and identify the action–reaction forces between the blocks. (b) Determine the tension in the string and the magnitude of the acceleration of the 10.0-kg block.arrow_forwardQuestion:Please solve with complete step by step solutions.A 6.0-lb stroller resting on a horizontal floor is pulled by a 85-lb boy with a constant force of 75.0 lb. What is the speed of the bag within 15.0 seconds? After the 15.0-second interval, the boy wants to stop the stroller within 7.5 seconds. How much force must he apply?arrow_forward
- A runner pushes against the track, as shown. (a) Provide a free-body diagram showing all the forces on the runner. (Hint: Place all forces at the center of his body, and include his weight.) (b) Give a revised diagram showing the xy-component form.arrow_forwardA 1130-kg car is held in place by a light cable on a very smooth (frictionless) ramp, as shown in the figure below. The cable makes an angle of 31.0° above the surface of the ramp, and the ramp itself rises at 25.0° above the horizontal. (a) Draw a free-body diagram for the car. (b) Find the tension in the cable. (c) How hard does the surface of the ramp push on the car? 31.0° 25.0° Cablearrow_forward(Figure 1) shows a 5.4 N force pushing two gliders along an air track. The 150 g spring between the gliders is compressed. The spring is firmly attached to the gliders, and it does not sag. How much force does the spring exert on glider A? Express your answer with the appropriate units. How much force does the spring exert on glider B? Express your answer with the appropriate units.arrow_forward
- Consider, you are in space and you throw an arrow into the space. How much force does it need to keep moving?arrow_forwardA 7 kg block is resting on a horizontal tabletop. A 3 kg block is on top of the 7 kg block. An applied force of 12 N is exerted straight downward on the top block. Draw the free-body diagrams on each block and find (a) the magnitude of the normal force on the 3 kg block from the 7 kg block, and (b) the magnitude of the normal force on the 7 kg block from the table.arrow_forwardA block of mass m is on an inclined ramp. The ramp makes anangle θ with respect to the horizontal, as shown. The ramp hasfriction, with coefficient of kinetic friction μk and static friction μs.This experiment takes place on earth. The block has an initial speed of v up the ramp. It travels adistance d along the ramp before it stops Draw a free body diagram clearly showing all the forces acting on the block while it is movingup the ramp.b) Calculate the work done by the Normal force as the block travels the distance d.Is it positive, negative, or zero?c) Calculate the work done by the Weight force as the block travels the distance d.Is it positive, negative, or zero?d) Calculate the work done by the Friction force as the block travels the distance d.Is it positive, negative, or zero?e) If the block comes to rest, how far has it travelled?Use the work-energy principle and your results of parts b), c), and d).arrow_forward
- Pls help ASAP. Pls show all work and calculations and include units for final answers.arrow_forwardThe figure below shows a block A of unknown mass m resting on an inclined plane. The block has coefficients of friction ??=0.80and ??=0.40with the inclined surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 5.0 kg. a.What is the minimum mass m that block A should have so that it doesn’t start to move up on the incline? b. If the mass you found in a) is nudged ever so slightly, it will start being pulled up the inclined plane. What acceleration will it have?arrow_forwardThe three blocks with weights as shown in the figure are placed on a 20o incline so that they are in contact with each other and at rest. Determine which, if any, of the blocks will move and the friction force acting under each. Assume that under blocks A and C, the coefficients of friction are fs = 0.50 and fk = 0.40 while under B they are fs = 0.30 and fk = 0.20arrow_forward
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Drawing Free-Body Diagrams With Examples; Author: The Physics Classroom;https://www.youtube.com/watch?v=3rZR7FSSidc;License: Standard Youtube License