College Physics, Volume 1
2nd Edition
ISBN: 9781133710271
Author: Giordano
Publisher: Cengage
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Chapter 4, Problem 1P
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The total force on the skater.
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Two blocks are stacked as shown to the right and rest on a frictionless surface. There is friction between the two blocks (coefficient of friction μ). An external force is applied to the top block at an angle θ to the horizontal.
a)What is the maximum force F that can be applied for the two blocks to move together? Give your answer in terms of the variables from the problem statement in addition to g for gravitational acceleration.
Two snowcats tow a housing unit to a new location at McMurdo Base, Antarctica, as shown in the figure(Figure 1). The sum of the forces FA and FB exerted on the unit by the horizontal cables is parallel to the line L, and FA=4300N.
Part A
Determine FB.
Express your answer using two significant figures.
Part B
Determine the magnitude of FA+FB.
Express your answer using two significant figures.
Two people are pulling a boat through the water as in Figure P4.20. Each exerts a force of 600 N directed at a θ = 25.0° angle relative to the forward motion of the boat. If the boat moves with constant velocity, find the resistive force F exerted on the boat by the water.
Chapter 4 Solutions
College Physics, Volume 1
Ch. 4.1 - Prob. 4.1CCCh. 4.2 - Prob. 4.2CCCh. 4.2 - Prob. 4.3CCCh. 4.4 - Prob. 4.4CCCh. 4.5 - Prob. 4.5CCCh. 4.5 - Prob. 4.6CCCh. 4 - Prob. 1QCh. 4 - Prob. 2QCh. 4 - Prob. 3QCh. 4 - Prob. 4Q
Ch. 4 - Prob. 5QCh. 4 - Prob. 6QCh. 4 - Prob. 7QCh. 4 - Prob. 8QCh. 4 - Prob. 9QCh. 4 - Prob. 10QCh. 4 - Prob. 11QCh. 4 - Prob. 12QCh. 4 - Prob. 13QCh. 4 - Prob. 14QCh. 4 - Prob. 15QCh. 4 - Prob. 16QCh. 4 - Prob. 17QCh. 4 - Prob. 18QCh. 4 - Prob. 19QCh. 4 - Prob. 20QCh. 4 - Prob. 1PCh. 4 - Prob. 2PCh. 4 - Several forces act on a particle as shown in...Ch. 4 - Prob. 4PCh. 4 - Prob. 5PCh. 4 - The sled in Figure 4.2 is stuck in the snow. A...Ch. 4 - Prob. 7PCh. 4 - Prob. 8PCh. 4 - Prob. 9PCh. 4 - Prob. 10PCh. 4 - Prob. 11PCh. 4 - Prob. 12PCh. 4 - Prob. 13PCh. 4 - Prob. 14PCh. 4 - Prob. 15PCh. 4 - Prob. 16PCh. 4 - Prob. 17PCh. 4 - Prob. 18PCh. 4 - Prob. 19PCh. 4 - Prob. 20PCh. 4 - Prob. 21PCh. 4 - Prob. 22PCh. 4 - Prob. 23PCh. 4 - Prob. 24PCh. 4 - Prob. 25PCh. 4 - Prob. 26PCh. 4 - Prob. 27PCh. 4 - Prob. 28PCh. 4 - Prob. 29PCh. 4 - Prob. 30PCh. 4 - Prob. 31PCh. 4 - A bullet is fired from a rifle with speed v0 at an...Ch. 4 - Prob. 33PCh. 4 - Prob. 34PCh. 4 - Prob. 35PCh. 4 - Prob. 36PCh. 4 - Prob. 37PCh. 4 - Prob. 38PCh. 4 - Prob. 39PCh. 4 - An airplane flies from Boston to San Francisco (a...Ch. 4 - Prob. 41PCh. 4 - Prob. 42PCh. 4 - Prob. 43PCh. 4 - Prob. 44PCh. 4 - Prob. 45PCh. 4 - Prob. 46PCh. 4 - Prob. 47PCh. 4 - Prob. 48PCh. 4 - Prob. 49PCh. 4 - Prob. 50PCh. 4 - Prob. 51PCh. 4 - Prob. 52PCh. 4 - Prob. 53PCh. 4 - Two crates of mass m1 = 35 kg and m2 = 15 kg are...Ch. 4 - Prob. 55PCh. 4 - Prob. 56PCh. 4 - Prob. 57PCh. 4 - Prob. 58PCh. 4 - Prob. 59PCh. 4 - Prob. 60PCh. 4 - Prob. 61PCh. 4 - Consider the motion of a bicycle with air drag...Ch. 4 - Prob. 63PCh. 4 - Prob. 64PCh. 4 - Prob. 65PCh. 4 - Prob. 66PCh. 4 - Prob. 67PCh. 4 - Prob. 68PCh. 4 - Prob. 70PCh. 4 - Prob. 71PCh. 4 - Prob. 72PCh. 4 - Prob. 73PCh. 4 - Prob. 74PCh. 4 - A vintage sports car accelerates down a slope of ...Ch. 4 - Prob. 76PCh. 4 - Prob. 77PCh. 4 - Prob. 78PCh. 4 - Prob. 79PCh. 4 - Prob. 80PCh. 4 - Prob. 81PCh. 4 - Prob. 82PCh. 4 - Prob. 83PCh. 4 - Prob. 84PCh. 4 - Prob. 85PCh. 4 - Prob. 86PCh. 4 - Two blocks of mass m1 = 2.5 kg and m2 = 3.5 kg...Ch. 4 - Prob. 88PCh. 4 - Prob. 89PCh. 4 - Prob. 90PCh. 4 - Prob. 91PCh. 4 - Prob. 92P
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- Two crates connected by a rope lie on a horizontal surface (Figure 1). Crate A has mass mA and crate B has mass mB. The coefficient of kinetic friction between each crate and the surface is μk. The crates are pulled to the right at constant velocity by a horizontal force F. In terms of mA, mB, and μk, calculate the magnitude of the force F. Express your answer in terms of some or all of the variables mA, mB, μk, and acceleration due to gravity g. In terms of mA, mB, and μk, calculate the tension in the rope connecting the blocks. Include the free-body diagram or diagrams you used to determine each answer.arrow_forwardA man is attempting to lift a crate using a two part pulley system as shown in the image. The crate has mass m2 = 53 kg, and the man has m1 = 75 kg. He pulls downward on the rope with a force of magnitude F = 659 N. The pulleys are massless and frictionless. 1.) Using T to describe the magnitude of the tension force, write an expression for the sum of the forces in the y direction acting on the crate, in terms of gravity and the variables provided. 2.) what is the blocks acceleration in m/s^2?arrow_forwardSolve the problem with complete and neat solution. Draw the figure. Determine the x and y components of the forces shown. Situation 1 F3 = 600N 30° 60° F1 = 450Ñ F2 = 500N Situation 2 58KN 300 300 400 20KN 400 33KNarrow_forward
- An athlete pulls box E using an inextensible rope P while being resisted by another inextensible rope S. Let P be the tension force on rope P and S be the tension force on rope S. Consider particle analysis involving only forces P and S. P E S 2. If P = 495N, S = 465N, 0 = 10° and a = 29° , which of the following is closest to the magnitude and direction of R? 322 N, 32.9degs 161.2 N, 81.8degs 322 N, 32.9deg 161.2N, 81.1degaarrow_forwardAn object with a mass of m placed on an oblique surface at an angle. We applied a horizontal force f = mg on the particle as shown. Assume that the friction force between the object and the surface is so large that the object remains in place? Find the vertical force FN and the friction force ff ? In terms of the static friction coefficient, what is the range of the angle at which the object remains stagnant?arrow_forwardA certain orthodontist uses a wire brace to align a patient's crooked tooth as in Figure P4.38. The tension in the wire is adjusted to have a magnitude of 18.0 N. Find the magnitude of the net force exerted by the wire on the crooked tooth. .arrow_forward
- The three ropes in figure shown are tied to a small, very light ring. Two of the ropes are anchored to walls at right angles, and the third rope pulls at an angle of 140° to the first rope with a force of 138.0 N. What is T1(in N), the magnitude of the tension force in the first rope? What is T2 (in N), the magnitude of the tension force in the second rope?arrow_forwardShown to the right is a block of mass m = 12.9 kg sitting on a ramp that makes an angle θ = 27° with the horizontal. This block is being pushed by a horizontal force F = 211 N. The coefficient of kinetic friction between the two surfaces is μ = 0.41. a. Write an equation for the acceleration of the block up the ramp using variables from the problem statement together with g for the acceleration due to gravity. b. Find the acceleration of the block up the ramp in m/s2.arrow_forwardQuestion 1. a) Consider a uniform force field where the force acting on a body has the same magnitude everywhere, pointing in the same direction (along the y-axis). Derive the formulae for the range and height of a body launched with velocity v at an angle 0 to the x-axis. b) Give two different examples where you might find such a uniform force field. What is the acceleration on the body in each example? c) Consider a projectile launched on the surface of the Earth. How fast does its initial velocity need to be before the assumption of a uniform force field in part a) becomes invalid? (Assume a launch angle of 45°). Explain your answer. (Hint: you will probably need to account for the horizon on Earth).arrow_forward
- At a post office, a parcel that is an m kg box slides down a ramp inclined at an angle θ with the horizontal, as shown. The coefficient of kinetic friction between the box and the ramp is μK, and the coefficient of static friction for the same is μS. Notice that the coordinate axes have been chosen with the x axis directed up the incline, as shown. 1. Input an expression for the acceleration of the box in the x direction consistent with the coordinate axes on the diagram. Express your answer in terms of the mass of the box, m, the acceleration due to gravity, g, the angle of the incline, θ, and appropriate coefficients of friction. The coefficient of kinetic friction between the box and the ramp is μK, and the coefficient of static friction for the same is μS.arrow_forwardAn object of mass m is subjected to three forces: F1, F2, and F3. In the right figure, the three forces are shown in their respective directions. The forces F1 and F3 have a magnitude of F, while F2 has a value of 2F. What is the object's acceleration? Remember that an acceleration is a vector and express it in terms of F and m.arrow_forwardThree force are exerted on an object placed on a tilted floor. The three forces are directed as shown in the figure. If the forces have magnitudes F1=1.0N, F2=8.0N and F3=7.0N. What is the component of the net force Fnet=F1+F2+F3 parallel to the floor?arrow_forward
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