College Physics, Volume 1
2nd Edition
ISBN: 9781133710271
Author: Giordano
Publisher: Cengage
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Chapter 3, Problem 42P
To determine
The minimum force required.
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A flatbed truck moving at 28 m/s carries a steel girder that rests on its wooden floor. The girder is not strapped down, in violation with USDOT regulations. If the coefficient of static friction between steel and wood is 0.52, what is the minimum distance over which the truck can come to a stop without the girder sliding toward the cab of the truck? (answer: 77 m)
(b) What is the minimum time over which the truck can accelerate forward from 0 m/s to 28 m/s with a constant acceleration without the girder sliding off the back? (answer: 5.5 s)
FNET = ma fs,max = sN W = mg v2 = v02 + 2ax
g = 9.81 m/s2
A particle of mass 8 kg is undergoing one-dimensional motion. It is subject to a constant force of 35 N, and has an initial speed of 9 m/s. The force is parallel to the initial velocity, both of which are directed in the positive direction along the axis of motion.
What is the change in velocity Δv, in meters per second, of the particle between t = 0 and t = 3 s?
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Same type of track as in the previous problem, this time with d = 2.69 m. The block starts at x = 0, and is given a push to the left with an initial speed of 6.40 m/s, so it starts sliding up the track to the left. At what value of x will the block reverse direction and start sliding back down?
Chapter 3 Solutions
College Physics, Volume 1
Ch. 3.2 - Prob. 3.1CCCh. 3.3 - Prob. 3.2CCCh. 3.4 - Prob. 3.3CCCh. 3.4 - Prob. 3.4CCCh. 3.5 - Prob. 3.5CCCh. 3.6 - Prob. 3.6CCCh. 3.7 - Acceleration of a Skydiver Figure 3.27 shows a...Ch. 3 - Prob. 1QCh. 3 - Prob. 2QCh. 3 - Prob. 3Q
Ch. 3 - Prob. 4QCh. 3 - Prob. 5QCh. 3 - Prob. 6QCh. 3 - Prob. 7QCh. 3 - Prob. 8QCh. 3 - The lower piece of silk in Figure 3.20 is acted on...Ch. 3 - Devise a block-and-tackle arrangement that...Ch. 3 - Prob. 11QCh. 3 - Prob. 12QCh. 3 - Prob. 13QCh. 3 - Prob. 14QCh. 3 - Prob. 15QCh. 3 - Prob. 16QCh. 3 - Prob. 17QCh. 3 - Prob. 18QCh. 3 - Prob. 19QCh. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Prob. 12PCh. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - Prob. 21PCh. 3 - Prob. 22PCh. 3 - A bullet is fired upward with a speed v0 from the...Ch. 3 - Prob. 24PCh. 3 - Prob. 25PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 30PCh. 3 - Prob. 31PCh. 3 - Prob. 32PCh. 3 - Your friends car has broken down, and you...Ch. 3 - Prob. 34PCh. 3 - Prob. 35PCh. 3 - Prob. 36PCh. 3 - Prob. 37PCh. 3 - Prob. 38PCh. 3 - Prob. 39PCh. 3 - You are given the job of moving a refrigerator of...Ch. 3 - Prob. 41PCh. 3 - Prob. 42PCh. 3 - Prob. 43PCh. 3 - Prob. 44PCh. 3 - Prob. 45PCh. 3 - Prob. 46PCh. 3 - A hockey puck slides along a rough, icy surface....Ch. 3 - Prob. 48PCh. 3 - Prob. 49PCh. 3 - Prob. 50PCh. 3 - Prob. 51PCh. 3 - Prob. 52PCh. 3 - Prob. 53PCh. 3 - Prob. 54PCh. 3 - Prob. 55PCh. 3 - Prob. 56PCh. 3 - Prob. 57PCh. 3 - Prob. 58PCh. 3 - Prob. 59PCh. 3 - Prob. 60PCh. 3 - A crate of mass 55 kg is attached to one end of a...Ch. 3 - Prob. 62PCh. 3 - Prob. 63PCh. 3 - In traction. When a large bone such as the femur...Ch. 3 - Prob. 65PCh. 3 - Prob. 66PCh. 3 - Prob. 67PCh. 3 - Prob. 68PCh. 3 - Calculate the terminal speed for a pollen grain...Ch. 3 - Prob. 70PCh. 3 - Prob. 71PCh. 3 - Calculate the terminal speed for a baseball. A...Ch. 3 - Prob. 73PCh. 3 - Prob. 74PCh. 3 - Prob. 75PCh. 3 - Prob. 76PCh. 3 - Prob. 77PCh. 3 - Prob. 78PCh. 3 - Prob. 79PCh. 3 - Prob. 80PCh. 3 - Prob. 81PCh. 3 - Prob. 82PCh. 3 - Prob. 83PCh. 3 - Prob. 84PCh. 3 - Prob. 85PCh. 3 - An impish young lad Stands on a bridge 10 m above...Ch. 3 - Prob. 87PCh. 3 - Prob. 88PCh. 3 - Prob. 89PCh. 3 - Prob. 90PCh. 3 - Prob. 91PCh. 3 - Prob. 92PCh. 3 - Prob. 93PCh. 3 - Prob. 94PCh. 3 - Prob. 95PCh. 3 - Prob. 96PCh. 3 - Prob. 97PCh. 3 - Prob. 98PCh. 3 - Prob. 99P
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- Can you find the acceleration of the two objects and (c) the tension of the cord ( the cord is the lightweight and the pulley is the frictionless and negligible mass).arrow_forwardA block with an initial velocity of 24 m/s slides along a surface with a friction coefficient of 0.30. How far does the block slide before it comes to rest?arrow_forwardA cable attached to a block of mass 10.05 kg pulls the block along a horizontal floor at a constant velocity. If the tension in the cable is 6.23 N, what is the coefficient of kinetic friction between the block and the floor?arrow_forward
- A man pushes an object to the right and exerts a force which has a horizontal compotent of F = 33 N. A horizontal frictional force has a magnitude of f = 15 N which opposed the horizontal component of the fushing force. The mass of the object is m = 31 kg. Write an expression for the magnitude of the acceleration of the object. If the object starts at rest what is the speed in meters per second at t = 2.00s? If the man stops pushing the object at t = 2.00s and the firctional force is constant what is the distance in meters does to object slide before coming to a rest?arrow_forwardA hockey puck is sliding across the ice with an initial velocity of 25 m/s. If the coefficient of friction between the hockey puck and the ice is 0.08, how much time (in seconds) will it take before the hockey puck slides to a stop?arrow_forwardA box of holiday decorations has a mass of 38 kg and is being pushed across the floor. The frictional force along the surface is 56 N and it is being moved at a constant velocity. If the box is in equilibrium because all forces acting on it are equal, what must be the applied force in order for this to happen?arrow_forward
- We start with some review problems A crate of mass 49.0 kg rests on a level surface, with a coefficient of kinetic friction 0.145. You push on the crate with an applied force of 215 N. What is the magnitude of the crate s acceleration as it slides? 2.08 m/s^2 5.71 m/s^2 2.97 m/s^2 4.39 m/s^2arrow_forwardA 500 kg trailer being pulled behind a car is subject of a 100 Newton resistance force due to friction. WHat force must the car exert on the trailer if the trailer is to move a. at a constant speed of 25 km/hr? b. forward with ana cceleration of 2.0 m/s^2 c. starting from rest (a=k), the car and trailer travel 150 m in 10 s?arrow_forwardIf a single constant force acts on an object that moves on a straight line, the object’s velocity is a linear function of time. The equation v = vi + at gives its velocity v as a function of time, where a is its constant acceleration. What if velocity is instead a linear function of position? Assume that as a particular object moves through a resistive medium, its speed decreases as described by the equation v = vi − kx, where k is a constant coefficient and x is the position of the object. Find the law describing the total force acting on this object.arrow_forward
- A box with mass 25.1 kg has an initial velocity of 2.66 m/s when a woman starts pushing the box with a constant force so that the net force on the box is 3.34 N. What distance has the box travelled when the velocity of the box 4.19 m/s?arrow_forwardConsider a 196.2 N cart that is being pulled along the level ground by a rope that is inclined at 30° above the horizontal. Suppose that a friction force of 30 N opposes the motion. Determine how large is the pulling force if the wagon is moving with: a. constant speed? b. an acceleration of 0.40 m/s²?arrow_forwardIn the drawing, the weight of the block on the table is 422 N and that of the hanging block is 185 N. Ignoring all frictional effects and assuming the pulley to be massless, find (a) the acceleration of the two blocks and (b) the tension in the cord. (a) Number Units (b) Number Unitsarrow_forward
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