College Physics: A Strategic Approach (4th Edition)
4th Edition
ISBN: 9780134609034
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 40P
Problems 30 through 38 describe a situation. For each problem, identify all the forces acting on the object and draw a free-body diagram of the object.
38. A skydiver has his parachute open and is floating downward through the air at a constant speed.
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Problem B1. Two blocks A and B are held together (they move as one) while a
force F of magnitude 200 N pulls block B to the right forming an angle 0 = 20 °.
Block B is on a rough horizontal surface with a coefficient of kinetic friction of
0.800.
The masses of the blocks are ma = 6.00 kg and må = 7.00 kg.
A
B
Figure B1. Problem diagram B1
A) Draw a free-body diagram showing all the forces directly applied to block A.
Problem 3: You need to push a box across carpet. The box and its contents have a mass of 75 kg. The
coefficients of static friction and kinetic friction between the box and the carpet are 0.60 and 0.40,
respectively.
A. You push horizontally on the box with a force of 300 N. Draw a free-body diagram for this
scenario. What is the magnitude of all the individual forces that act on the box?
B. You now push horizontally on the box with constant force of 500 N. Draw a free body diagram
that clearly labels each force. Calculate the magnitude of each individual force that acts on the
box.
C. What is the net force and acceleration for the box while you push with the 500 N?
Problem B1. Two blocks A and B are held together (they move as one) while a
force F of magnitude 200 N pulls block B to the right forming an angle 0 = 20 °.
Block B is on a rough horizontal surface with a coefficient of kinetic friction of
0.800.
The masses of the blocks are mā = 6.00 kg and mB = 7.00 kg.
B.
Figure B1. Problem diagram B1
B) Draw a free-body diagram showing all the forces directly applied to block B.
Chapter 4 Solutions
College Physics: A Strategic Approach (4th Edition)
Ch. 4 - If an object is not moving, does that mean that...Ch. 4 - An object moves in a straight line at a constant...Ch. 4 - If you know all of the forces acting on a moving...Ch. 4 - Three arrows are shot horizontally. They have left...Ch. 4 - Prob. 5CQCh. 4 - Internal injuries in vehicular acci-dents may be...Ch. 4 - Heres a great everyday use of the physics...Ch. 4 - Prob. 8CQCh. 4 - Suppose you are an astronaut in deep space, far...Ch. 4 - Jonathan accelerates away from a stop sign. His...
Ch. 4 - Prob. 11CQCh. 4 - Prob. 12CQCh. 4 - Josh and Taylor, standing face-to-face on...Ch. 4 - A person sits on a sloped hillside. Is it ever...Ch. 4 - Walking without slipping requires a static...Ch. 4 - Figure 4.30 b showed a situation in which the...Ch. 4 - Prob. 17CQCh. 4 - Prob. 18CQCh. 4 - The tire on this drag racer is severely twisted:...Ch. 4 - Suppose that, while in a squatting position, you...Ch. 4 - A block has acceleration a when pulled by a...Ch. 4 - A 5.0 kg block has an acceleration of 0.20 m/s2...Ch. 4 - Tennis balls experience a large drag force. A...Ch. 4 - A group of students is making model cars that will...Ch. 4 - A person gives a box a shove so that it slides up...Ch. 4 - Prob. 26MCQCh. 4 - As shown in the chapter, scallops use jet...Ch. 4 - Prob. 28MCQCh. 4 - Prob. 29MCQCh. 4 - Dave pushes his four-year-old son Thomas across...Ch. 4 - Figure Q4.29 shows block A sitting on top of block...Ch. 4 - Whiplash injuries during an automobile accident...Ch. 4 - An automobile has a head-on collision. A passenger...Ch. 4 - In a head-on collision, an infant is much safer in...Ch. 4 - Problems 4 through 6 show two forces acting on an...Ch. 4 - Problems 4 through 6 show two forces acting on an...Ch. 4 - Problems 4 through 6 show two forces acting on an...Ch. 4 - Prob. 7PCh. 4 - Prob. 8PCh. 4 - A baseball player is sliding into second base....Ch. 4 - A jet plane is speeding down the runway during...Ch. 4 - A skier is sliding down a 15 slope. Friction is...Ch. 4 - A falcon is hovering above the ground, then...Ch. 4 - Figure P4.13 shows an acceleration-versus-force...Ch. 4 - A constant force applied to object A causes it to...Ch. 4 - A compact car has a maximum acceleration of 4.0...Ch. 4 - Prob. 16PCh. 4 - A constant force is applied to an object, causing...Ch. 4 - A man pulling an empty wagon causes it to...Ch. 4 - Prob. 19PCh. 4 - Scallops eject water from their shells to provide...Ch. 4 - Figure P4.21 shows an objects...Ch. 4 - Prob. 22PCh. 4 - Two children fight over a 200 g stuffed bear. The...Ch. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Problems 27 through 29 show a free-body diagram....Ch. 4 - Problems 27 through 29 show a free-body diagram....Ch. 4 - Problems 27 through 29 show a free-body diagram....Ch. 4 - Prob. 32PCh. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Prob. 38PCh. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Problems 30 through 38 describe a situation. For...Ch. 4 - Prob. 41PCh. 4 - Prob. 42PCh. 4 - Three ice skaters, numbered 1, 2, and 3, stand in...Ch. 4 - A girl stands on a sofa. Identify all the...Ch. 4 - A car is skidding to a stop on a level stretch of...Ch. 4 - Squid use jet propulsion for rapid escapes. A...Ch. 4 - Prob. 47GPCh. 4 - Prob. 48GPCh. 4 - Prob. 49GPCh. 4 - Prob. 50GPCh. 4 - Prob. 51GPCh. 4 - Prob. 52GPCh. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Prob. 56GPCh. 4 - Prob. 57GPCh. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Prob. 60GPCh. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - Problems 49 through 61 describe a situation. For...Ch. 4 - A bag of groceries is on the back seat of your car...Ch. 4 - A car has a mass of 1500 kg. If the driver applies...Ch. 4 - Prob. 67GPCh. 4 - Prob. 69GPCh. 4 - Prob. 70GPCh. 4 - Prob. 71GPCh. 4 - The froghopper, champion leaper of the insect...Ch. 4 - A beach ball is thrown straight up, and some time...Ch. 4 - If your car is stuck in the mud and you dont have...Ch. 4 - Prob. 75MSPPCh. 4 - Prob. 76MSPPCh. 4 - If your car is stuck in the mud and you don't have...
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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