College Physics: A Strategic Approach (3rd Edition)
3rd Edition
ISBN: 9780321879721
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 69GP
Two blocks are at rest on a frictionless incline, as shown in Figure P5.69. What are the tensions in the two strings?
Figure P5.69
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A block of mass 3.00 kg is pushed up against a wall by a
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50.0°
Figure P5.53
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Figure P5.90
100 kg
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30.0°
53.1°
Chapter 5 Solutions
College Physics: A Strategic Approach (3rd Edition)
Ch. 5 - An object is subject to two forces that do not...Ch. 5 - Are the objects described here in static...Ch. 5 - What forces are acting on you right now? What net...Ch. 5 - Decide whether each of the following is true or...Ch. 5 - An astronaut takes his bathroom scale to the moon...Ch. 5 - A light block of mass m and a heavy block of mass...Ch. 5 - a. Can the normal force on an object be directed...Ch. 5 - A ball is thrown straight up. Taking the drag...Ch. 5 - You are going sledding with your friends, sliding...Ch. 5 - Suppose you are holding a box in front of you and...
Ch. 5 - You are walking up an icy slope. Suddenly your...Ch. 5 - Three objects move through the air as shown in...Ch. 5 - A skydiver is falling at her terminal speed. Right...Ch. 5 - Raindrops can fall at different speeds; some fall...Ch. 5 - An airplane moves through the air at a constant...Ch. 5 - Is it possible for an object to travel in air...Ch. 5 - For Questions 17 through 20, determine the tension...Ch. 5 - For Questions 17 through 20, determine the tension...Ch. 5 - For Questions 17 through 20, determine the tension...Ch. 5 - For Questions 17 through 20, determine the tension...Ch. 5 - In Figure Q5.21, block 2 is moving to the right....Ch. 5 - The wood block in Figure Q5.22 is at rest on a...Ch. 5 - A 2.0 kg ball is suspended by two light strings as...Ch. 5 - While standing in a low tunnel, you raise your...Ch. 5 - A 5.0 kg dog sits on the floor of an elevator that...Ch. 5 - A 3.0 kg puck slides due east on a horizontal...Ch. 5 - Eric has a mass of 60 kg. 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A 0.60 kg bullfrog is sitting at rest on a...Ch. 5 - A 23 kg child goes down a straight slide inclined...Ch. 5 - Two workers are sliding a 300 kg crate across the...Ch. 5 - A 4000 kg truck is parked on a 7.0 slope. 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To...Ch. 5 - A 20,000 kg rocket has a rocket motor that...Ch. 5 - Youve always wondered about the acceleration of...Ch. 5 - A 23 kg child goes down a straight slide inclined...Ch. 5 - An impala is an African antelope capable of a...Ch. 5 - Josh starts his sled at the top of a 3.0-m-high...Ch. 5 - The drag force is an important fact of life for...Ch. 5 - A wood block, after being given a starting push,...Ch. 5 - Researchers often use force plates to measure the...Ch. 5 - A person with compromised pinch strength in his...Ch. 5 - Its possible for a determined group of people to...Ch. 5 - A 1.0 kg wood block is pressed against a vertical...Ch. 5 - Two blocks are at rest on a frictionless incline,...Ch. 5 - Running indoors on a treadmill is slightly easier...Ch. 5 - Two identical 2.0 kg blocks are stacked as shown...Ch. 5 - A wood block is sliding up a wood ramp. If the...Ch. 5 - A 2.7 g Ping-Pong ball has a diameter of 4.0 cm....Ch. 5 - Two blocks are connected by a string as in Figure...Ch. 5 - The ramp in Figure P5.75 is frictionless. If the...Ch. 5 - The 100 kg block in Figure P5.76 takes 6.0 s to...Ch. 5 - MCAT-Style Passage Problems Sliding on the Ice In...Ch. 5 - MCAT-Style Passage Problems Sliding on the Ice In...Ch. 5 - MCAT-Style Passage Problems Sliding on the Ice In...Ch. 5 - MCAT-Style Passage Problems Sliding on the Ice In...
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- A 4.12 N ball needs to be accelerating in the vertical direction at 20 m/s2 to reach its target height. How much force must be exerted in the vertical direction to accomplish this?arrow_forward5.68 CP In Fig. P5.68 m1 20.0 kg and α = 53.1º. The coefficient of kinetic friction between the block and the incline is k = 0.40. What must be the mass m2 of the hanging block if it is to descend 12.0 m in the first 3.00 s after the system is released from rest? = Figure P5.68 m₁ α m2arrow_forward55. In Figure P5.55, the incline has mass Mand 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 0. т h Н -R Figure P5.55 Sarrow_forward
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- A setup similar to the one shown in Figure P5.38 is often used in hospitals to support and apply a horizontal traction force to an injured leg. (a) Determine the force of tension in the rope supporting the leg. (b) What is the traction force exerted to the right on the leg? Figure P5.38 70⁰ 8.00 kgarrow_forward5.68 CP In Fig. P5.68 m₁ = 20.0 kg and a = 53.1°. The coefficient of .. kinetic friction between the block and the incline is μ = 0.40. What must be the mass m₂ of the hanging block if it is to descend 12.0 m in the first 3.00 s after the system is released from rest? Figure P5.68 m₁ α m₂arrow_forwardPlease Aspaarrow_forward
- 41. An inventive child named Nick wants to reach an apple in a tree without climbing the tree. Sitting in a chair connected to a rope that passes over a frictionless pulley (Fig. P5.41), Nick pulls on the loose end of the rope with such a force that the spring scale reads 250 N. Nick's true weight is 320 N, and the chair weighs 160 N. Nick's feet are not touch- ing the ground. (a) Draw one pair of diagrams showing the forces for Nick and the chair considered as separate systems and another diagram for Nick and the chair considered as one system. (b) Show that the acceleration of the system is upward and find its magnitude. (c) Find the force Nick exerts on the chair.arrow_forwardJoe pushes down the length of the handle of a 14.1 kg lawn spreader. The handle makes an angle of 47.1° with the horizontal. Joe wishes to accelerate the spreader from rest to 1.39 m/s in 1.7 s. What force must Joe apply to the handle? Answer in units of N.arrow_forwardFigure P5.68 2. In Fig. P5.68 m, = 20.0 kg and a = 53.1°. The coefficient of kinetic friction between the block and the incline is Hg = 0.40. What must be the mass of the hanging block if it is to descend 12.0 m in the first 3.00 s after the system is released from rest? m2arrow_forward
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