Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337553292
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 5, Problem 53CP
Initially, the system of objects shown in Figure P5.49 is held motionless. The pulley and all surfaces and wheels are frictionless. Let the force
Figure P5.49 Problems 49 and 53
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In the system shown in Figure P5.23, a horizontal force Facts on an object of mass m2 = 8.00 kg . The horizontal surface is frictionless. Consider the acceleration of the sliding object as a function of F. (a) For what values of F, does the object of mass m = 2.00 kg accelerate upward? Answer! (b) For what values of F, is the tension in the cord zero? Answer! () Plot the acceleration of the m, object versus F. Include values of F, from - 100 N to +100 N. SNIPP
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Chapter 5 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 5.2 - Which of the following statements is correct? (a)...Ch. 5.4 - An object experiences no acceleration. Which of...Ch. 5.4 - You push an object, initially at rest, across a...Ch. 5.5 - Suppose you are talking by interplanetary...Ch. 5.6 - (i) If a fly collides with the windshield of a...Ch. 5.8 - You press your physics textbook flat against a...Ch. 5.8 - Prob. 5.7QQCh. 5 - A certain orthodontist uses a wire brace to align...Ch. 5 - One or more external forces, large enough to be...Ch. 5 - A 3.00-kg object undergoes an acceleration given...
Ch. 5 - The average speed of a nitrogen molecule in air is...Ch. 5 - Two forces, F1=(6.00i4.00j)N and...Ch. 5 - Prob. 6PCh. 5 - Review. Three forces acting on an object are given...Ch. 5 - Prob. 8PCh. 5 - Review. The gravitational force exerted on a...Ch. 5 - Review. The gravitational force exerted on a...Ch. 5 - Review. An electron of mass 9. 11 1031 kg has an...Ch. 5 - If a man weighs 900 N on the Earth, what would he...Ch. 5 - You stand on the seat of a chair and then hop off....Ch. 5 - A brick of mass M has been placed on a rubber...Ch. 5 - Review. Figure P5.15 shows a worker poling a boata...Ch. 5 - An iron bolt of mass 65.0 g hangs from a string...Ch. 5 - A block slides down a frictionless plane having an...Ch. 5 - A bag of cement whose weight is Fg hangs in...Ch. 5 - The distance between two telephone poles is 50.0...Ch. 5 - An object of mass m = 1.00 kg is observed to have...Ch. 5 - Prob. 21PCh. 5 - An object of mass m1 = 5.00 kg placed on a...Ch. 5 - In the system shown in Figure P5.23, a horizontal...Ch. 5 - A car is stuck in the mud. A tow truck pulls on...Ch. 5 - An object of mass m1 hangs from a string that...Ch. 5 - Why is the following situation impassible? Your...Ch. 5 - Consider a large truck carrying a heavy load, such...Ch. 5 - Before 1960m people believed that the maximum...Ch. 5 - A 9.00-kg hanging object is connected by a light,...Ch. 5 - The person in Figure P5.30 weighs 170 lb. As seen...Ch. 5 - Three objects are connected on a table as shown in...Ch. 5 - You are working as a letter sorter in a U.S Post...Ch. 5 - You have been called as an expert witness for a...Ch. 5 - A block of mass 3.00 kg is pushed up against a...Ch. 5 - Prob. 35PCh. 5 - A 5.00-kg block is placed on top of a 10.0-kg...Ch. 5 - A black aluminum glider floats on a film of air...Ch. 5 - Why is the following situation impossible? A book...Ch. 5 - Two blocks of masses m1 and m2, are placed on a...Ch. 5 - A 1.00-kg glider on a horizontal air track is...Ch. 5 - An inventive child named Nick wants to reach an...Ch. 5 - Prob. 42APCh. 5 - Prob. 43APCh. 5 - Prob. 44APCh. 5 - A crate of weight Fg is pushed by a force P on a...Ch. 5 - In Figure P5.46, the pulleys and pulleys the cord...Ch. 5 - You are working as an expert witness for the...Ch. 5 - A flat cushion of mass m is released from rest at...Ch. 5 - What horizontal force must be applied to a large...Ch. 5 - Prob. 50APCh. 5 - A block of mass 2.20 kg is accelerated across a...Ch. 5 - Prob. 52CPCh. 5 - Initially, the system of objects shown in Figure...Ch. 5 - Prob. 54CPCh. 5 - In Figure P5.55, the incline has mass M and is...
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- FIGURE P5.49 Problems 49 and 50. Suppose the system of blocks in Problem 49 is initially held motionless and, when released, begins to accelerate. a. If m1 = 7.00 kg, m2 = 2.00 kg, and the magnitude of the acceleration of the blocks is 0.134 m /s2, find the magnitude of the kinetic frictional force between the second block and the ledge. b. What is the value of the coefficient of kinetic friction between the block and the ledge?arrow_forwardInitially, the system of objects shown in Figure P5.49 is held motionless. The pulley and all surfaces and wheels are frictionless. Let the force F be zero and assume that m1 can move only vertically. At the instant after the system of objects is released, Find (a) the tension T in the string, (b) the acceleration of m2, (c) the acceleration of M, and (d) the acceleration of m1. (Note: The pulley accelerates along with the cart.) Figure P5.49 Problems 49 and 53arrow_forwardSuppose mG and mh have equal masses. In this situation, do you expect the magnitude of the acceleration of the glider will be less than g or greater than g or equal to g? please explain the reason.arrow_forward
- You drop from rest from a platform 10.0 m10.0 m above the surface of a 6.00 m6.00 m deep pool. Assuming that you enter the water vertically and move through the water with constant acceleration, what is the minimum average force FF the water must exert on you to prevent you from hitting the bottom of the pool? Assume your mass is m=65.0 kgm=65.0 kg and that air resistance during the fall is negligible.arrow_forwardIf the only forces acting on a 2.0kg mass are F1=(3i-8j)N and F2=(5i+3j)N, what is the magnitude of the acceleration of the particle?arrow_forwardThree objects are connected on a table as shown in Figure P5.31. The coefficient ofkinetic friction between the block of mass m2 and the table is 0.350. The objects havemasses of m1 = 4.00 kg, m2 = 1.00 kg, and m3 = 2.00 kg, and the pulleys are frictionless.(a) Draw a free-body diagram of each object. (b) Determine the acceleration of eachobject, including its direction. (c) Determine the tensions in the two cords. What If?(d) If the tabletop were smooth, would the tensions increase, decrease, or remain thesame? Explain.arrow_forward
- Consider the modified Atwood machine problem illustrated in Example 6.4 on page 274 of the book, and suppose m1 = 5kg and m2 = 10kg . Suppose I apply a horizontal force to the block on the table, so that both masses are at rest. What is the magnitude of the force I should apply? Group of answer choices 6.53 N 0.0 N 32.7 N 98.0 Narrow_forwardA cougar bites a llama of mass m and drags it across some rough horizontal ground. The cougar applies a horizontal force of magnitude F, and the llama is dragged at a constant velocity. The coefficient of kinetic friction is μk. While the cougar applies the force F, the magnitude of the kinetic friction force, fk , on the llama obeys: a)F > µk m g > fk b)F = fk = µk m gc)F = fk < µk m gd)cannot answer, not enough information givene) F > fk = µk m garrow_forwardA 9.00-kg hanging object is connected by a light, inextensible cord over a light, frictionless pulley to a 5.00-kg block that is sliding on a flat table (Fig. P5.7). Taking the coefficient of kinetic friction as 0.200, find the tension in the string. Figure P5.7arrow_forward
- Two objects, m1 = 3.00 kg and m2 = 8.50 kg, are attached by a massless cord passing over a frictionless pulley as shown in Figure P5.51. Assume the horizontal surface is frictionless. a. Draw a free-body diagram for each of the two objects. b. What is the tension in the cord? c. What is the magnitude of the acceleration of the two objects? FIGURE P5.51 Problems 51 and 65.arrow_forwardIn Figure P4.53, the incline has mass M and is fastened to the stationary horizontal tabletop. The block of mass m is placed near the bottom of the incline and is released with a quick push that sets it sliding upward. The block stops near the top of the incline as shown in the figure and then slides down again, always without friction. Find the force that the tabletop exerts on the incline throughout this motion in terms of m, M, g, and .arrow_forwardAn object of mass M is held in place by an applied force F and a pulley system as shown in Figure P4.43. The pulleys are massless and frictionless. (a) Draw diagrams showing the forces on each pulley. Find (b) the tension in each section of rope, T1, T2, T3, T4, and T5 and (c) the magnitude of F. Figure P4.43 44. Any device that allows you to increase the force you exert is a kind of machine. Some machines, such as the prybar or the inclined plane, are very simple. Some machines do not even look like machines. For example, your car is stuck in the mud and you cant pull hard enough to get it out. You do, however, have a long cable that you connect taut between your front bumper and the trunk of a stout tree. You now pull sideways on the cable at its midpoint, exerting a force f. Each half of the cable is displaced through a small angle from the straight line between the ends of the cable. (a) Deduce an expression for the force acting on the car. (b) Evaluate the cable tension for the case where = 7.00 and f = 100 N.arrow_forward
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