Concept explainers
Figure 4-53 [shows a block (mass mA) on a smooth horizontal surface, connected by a thin cord that passes over a pulley to a second block (mB), which hangs vertically. (a) Draw a free-body diagram for each block, showing the force of gravity on each, the force (tension) exerted by the cord, and any normal force.(b) Apply Newton's second law to find formulas for the acceleration of the system and for the tension in the cord. Ignore friction and the masses of the pulley and cord.
Figure 4-53
Problems 32 and 33. Mass mArests on a smooth horizontal surface; mBhangs vertically.
Learn your wayIncludes step-by-step video
Chapter 4 Solutions
Physics: Principles and Applications -- Pearson e Text Instant Access (Pearson+)
Additional Science Textbook Solutions
Essential University Physics (3rd Edition)
Lecture- Tutorials for Introductory Astronomy
An Introduction to Thermal Physics
College Physics
The Cosmic Perspective
Essential University Physics: Volume 2 (3rd Edition)
- A particle of mass 6 kg is placed on a rough plane inclined at an angle a to the horizontal where sin a = 0.8. The coefficient of friction between the particle and the plane is 0.4. An upward force PN actson the particle along a line of greatest slope of the plane. Find the greatest value of Parrow_forwardPlease problem .15arrow_forwardThe coefficient of friction between blocks is us = 0.4, at what angle will the block start sliding if it is initially at rest?arrow_forward
- Write Newton's laws for a static system (1) EF, = mg sin 0 – µ̟n = 0 in component form. The gravity force has two components. (2) EF, = n - mg cos 0 = 0 Rearrange Equation (2) to get an n = mg cos e expression for the normal force n. Substitute the expression for n into EF, = mg sin 0 – µ̟mgcos 0 = 0 → tan 0 =µ, Equation (1) and solve for tan 0. Apply the inverse tangent function to tan 0 = 0.350 → 0 = tan 1 (0.350) = 19.3° get the answer. LEARN MORE REMARKS It's interesting that the final result depends only on the coefficient of static friction. Notice also how similar Equations (1) and (2) are to the equations developed in previous problems. Recognizing such patterns is key to solving problems successfully. QUESTION A larger static friction constant would result in a: (Select all that apply.) O larger component of normal force at the maximum angle. O larger component of gravitational force along the ramp at the maximum angle. smaller component of gravitational force along the ramp…arrow_forward(b) Write an expression for the sum of the forces in the x-direction using the variables from the above Free Body Diagram. ΣFx= Part (c) Given the coordinate system specified in the problem statement, write an expression for the sum of the forces in the y-direction. Part (d) Write an expression to show the relationship between the maximum friction force, Ff, and the normal force, F. Part (e) Calculate the magnitude of F, in Newtons, if F is at its maximum.arrow_forward14. Figure 5-34 shows three blocks being pushed across a frie- tionless floor by horizontal force F. What total mass is acceler- ated to the right by (a) force F, (b) force F, of block 1 on block 2, and (c) force F of block 2 on block 3? (d) Rank the blocks according to their accelerations, greatest first. (e) Rank forces F, F, and F32 according to their magnitude, greatest first. (Warmup for Problem 40) 10 kg 5 kg 2 kg 3.arrow_forward
- Consider a 10.0-kg mass that slides up the surface of an inclined plane with an inclination of 30o. Draw the free body diagram for the mass sliding on the plane. If the mass has a speed of 3.0 m/s when it begins to travel up the inclined plane, find how far it moves up the plane before it stops. The coefficient of kinetic friction between the mass and the plane is k = 0.15.arrow_forwardA woman at an airport is towing her 13.0-kg suitcase at constant speed by puling on a strap at an angle e above the horizontal. She puls on the strap with a 28.0-N force, and the friction force on the suitcase is 20.0 N. (a) Draw a free-body diagram of the suitcase. Cheose Fe no ie selected This answer has not been graded yet (b) What angle does the strap make with the horizontal? (c) What is the magnitude of the normal force that the ground exerts on the suitcase? Need Help? Weharrow_forwardHow would I go about thisarrow_forward
- Problem 1 ( ) A block of mass m=15 Kg with initial velocity m/s is sliding on a horizontal floor, where the coefficient of kinetic friction is equal to 0. 5. At the end, the block comes to a stop. (Take g=9.8 m/s²). ie g) ) Find FNet- FNet = < h) ( How long will it takes to the block to come to a stop? At =arrow_forward(a) You push with an 8 N force on a box that weighs 1 N which is resting on a horizontal plane. A frictional force of 2 N opposes the motion of the box. Draw a free-body diagram of this system and then calculate the acceleration of the box due to this force.arrow_forward4-61. The drum has a weight of 500 N and rests on the floor for which the coefficient of static friction is 4, = 0.5. If a = 0.9 m and b= 1.2 m, determine the smallest magnitude of the force P that will cause impending motion of the drum.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