Concept explainers
Suppose your car was mired deeply in the mud and you wanted to use the method illustrated in Figure 4.37 to pull it out. (a) What force would you have to exert perpendicular to the center of the rope to produce a force of 12,000 N on the car if the angle is 2.00°? In this part, explicitly show how you follow the steps in the Problem-Solving Strategy for Newton's laws of motion. (b) Real ropes stretch under such forces. What force would be exerted on the car if the angle increases to 7.00° and you still apply the force found in part (a) to its center?
Figure 4.37
Trending nowThis is a popular solution!
Chapter 4 Solutions
College Physics
Additional Science Textbook Solutions
Applications and Investigations in Earth Science (9th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
Organic Chemistry (8th Edition)
Human Anatomy & Physiology (2nd Edition)
Campbell Biology: Concepts & Connections (9th Edition)
Microbiology: An Introduction
- The coefficient of static friction between an 8 kg box at rest and a 35° inclined plane is 0.70. Determines whether the object starts moving or stays in a static state. Justify your answer. If the object starts moving, what happens to the coefficient of friction? Also, describes the movement of the box.arrow_forwardA 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_forwardWhile a person is walking, his arms swing through approximately a 45 ∘ angle in 0.60 s. As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0 cm long, measured from the shoulder joint. part A) What is the acceleration of a 1.6 g drop of blood in the fingertips at the bottom of the swing? Express your answer with the appropriate units. Part B) Find the force that the blood vessel must exert on the drop of blood in part A. Express your answer with the appropriate units. part C) What force would the blood vessel exert if the arm were not swinging? Express your answer with the appropriate units.arrow_forward
- A box is hanging from two strings. String #1 pulls up and left, making an angle of 50⁰ with the horizontal on the left, and string #2 pulls up and to the right with a force of 110 N, making an angle of 65° with the horizontal on the right. Find the mass of the box. Hint: Apply EFx = 0 and ΣFy = 0 Your Answer: Answerarrow_forwardAnswer parts a, and b of the following question:1. a) A catcher stops a 0.15-kg ball traveling at 40 m/s in a distance of 20 cm. What is the magnitude of the average force that the ball exerts against his glove? b) A 10-kg object is hanging by a very light wire in an elevator that is traveling upward. The tension in the rope is measured to be 75 N. What are the magnitude and direction of the acceleration of the elevator?arrow_forwardNeed helparrow_forward
- Consider the figure shown in the following figure. You are lowering two boxes, one on top of the other, down a ramp by pulling on a rope parallel to the surface of the ramp. Both blocks move with constant velocity of 10.0 [m/s]. The coefficient of kinetic friction between the ramp and the lower box is 0.555 and the coefficient of static friction between the two boxes is 0.750.4. What is the magnitude of the applied force?5. Determine the angle at which the top block will start to slide down the bottomarrow_forwardA block of mass 5.40 kg is pushed up against a wall by a force P that makes an angle of = 50.0° angle with the horizontal as shown below. The coefficient of static friction between the block and the wall is 0.300. (a) Determine the possible values for the magnitude of P that allow the block to remain stationary. (If there is no maximum, enter NONE in that answer blank.) P. maxl= IP A N X Your response differs from the correct answer by more than 10%. Double check your calculations. N P Pminh, = 92.32 (b) What happens if IP has a larger value than IP The block slides up the wall. The block does not slide along the wall. The block slides down the wall. |Pmaxl = P min! = What happens if IP has a smaller value than IP min!? The block slides up the wall. O The block does not slide along the wall. The block slides down the wall. (c) Repeat parts (a) and (b) assuming the force makes an angle of = 12.0° with the horizontal. Determine the possible values for the magnitude of P that allow the…arrow_forwardWhat is the x-component of the resultant force? Express your answer in newtons. Two forces, F1 and F2, act at a point. The magnitude of F, is 8.50 N, and its direction is an angle 65.0° above the negative direction of r-axis in the second quadrant. The magnitude of F, is 6.50 N, and its direction is an angle 54.1° below the negative direction of z-axis in the third quadrant. F, = N Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Part B What is the y-component of the resultant force? Express your answer in newtons. ν ΑΣφ ? F, = Submit Request Answer Part C What is the magnitude of the resultant force? Express your answer in newtons. ? F =arrow_forward
- Please help with this question, it comes with a few subparts. PLEASE HELP.arrow_forwardA Christmas light hangs on a series of strings as shown in the figure below. The tension on string a, Ta, is 0.48 N. 42° b J a d C K 25° 30° (a) What is the tension on string b? (b) What is the tension on string c? (c) What is the tension on string d? (d) What is the mass of the Christmas light, m, in grams?arrow_forwardAn 85-N box of oranges is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0.90 m/s each second. The push force has a horizontal component of 20 N and a vertical component of 25 N downward. Illustrate the situation with complete and correct labels of the given information. (This is in addition to the required FBD of the box.)Calculate the coefficient of kinetic friction between the box and floor.arrow_forward
- College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningUniversity Physics (14th Edition)PhysicsISBN:9780133969290Author:Hugh D. Young, Roger A. FreedmanPublisher:PEARSONIntroduction To Quantum MechanicsPhysicsISBN:9781107189638Author:Griffiths, David J., Schroeter, Darrell F.Publisher:Cambridge University Press
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningLecture- Tutorials for Introductory AstronomyPhysicsISBN:9780321820464Author:Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina BrissendenPublisher:Addison-WesleyCollege Physics: A Strategic Approach (4th Editio...PhysicsISBN:9780134609034Author:Randall D. Knight (Professor Emeritus), Brian Jones, Stuart FieldPublisher:PEARSON