18th Edition

ISBN: 9781938168277

Author: William Moebs, Samuel J. Ling, Jeff Sanny

Publisher: OpenStax - Rice University

Concept explainers

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.

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Textbook Question

Chapter 6, Problem 41P

A roller coaster car starts from rest at the top of a track 30.0 m long and inclined at 2 0.0 ° to the horizontal. Assume that friction can be ignored. (a) What is the acceleration of the car? (b) How much time elapses before it reaches the bottom of the track?

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Chapter 6, Problem 40P

Chapter 6, Problem 42P

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A skier slides down a hill in a straight line. The hill is 60m high and the coefficient of kinetic friction between the snow and the skis is 0.1. The hill is at an angle of 10 degrees with the horizontal. The mass of the skier is 70 kg. If the skier starts her run from rest and air friction can be ignored, how fast is she moving at the bottom of the hill? Please answer in units of m/s.

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e.g. A wood block mB is static on smooth table with another block MA on one ends of it. Now give m an initial velocity vo to make it sliding on B. assume the friction coefficient is μ, m₁=m³, and when A arrives at the other end of B, they have the same speed. What is the length of B and the displacement of B (A is a mass point).. Execute A A gives B a friction um g and B gives A a friction -µmäg. Frictions are internal force, so momentum is conserved for the whole system. Assume the velocity is v when A gets right end. B (a) (b) B 12

Chapter 6 Solutions

University Physics Volume 1

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If...Ch. 6 - A banked highway is designed for traffic moving at...Ch. 6 - Drag Force and Terminal Speed The terminal...Ch. 6 - A 60.0-kg and a 90.0-kg skydiver jump from an...Ch. 6 - A 560-g squirrel with a surface area of...Ch. 6 - To maintain a constant speed, the force provided...Ch. 6 - By what factor does the drag force on a car...Ch. 6 - Calculate the velocity a spherical rain drop would...Ch. 6 - Using Stokes’ law, verify that the units for...Ch. 6 - Find the terminal velocity of a spherical...Ch. 6 - Stokes’ law describes sedimentation of particles...Ch. 6 - Suppose that the resistive force of the air on a...Ch. 6 - A small diamond of mass 10.0 g drops from a...Ch. 6 - (a) What is the final velocity of a car originally...Ch. 6 - A 75.0-kg man stands on a bathroom scale in an...Ch. 6 - (a) Calculate the minimum coefficient of friction...Ch. 6 - As shown below, if M=5.50kg , what is the tension...Ch. 6 - As shown below, if F=60.0Nand M=4.00kg, what is...Ch. 6 - As shown below, if M=6.0kg, what is the tension in...Ch. 6 - A small space probe Is released from a spaceship....Ch. 6 - A half-full recycling bin has mass 10 kg and is...Ch. 6 - A child has mass 6.0 kg and slides down a...Ch. 6 - The two barges shown here are coupled by a cable...Ch. 6 - If the order of the barges of the preceding...Ch. 6 - An object with mass m moves along the x -axis. Its...Ch. 6 - A helicopter with mass 2.35104kg has a position...Ch. 6 - Located at the origin, an electric car of mass mis...Ch. 6 - A particle of mass mis located at the origin. It...Ch. 6 - A 2.0-kg object has a velocity of at t=0 . A...Ch. 6 - A 1.5-kg mass has an acceleration of (4.0 i 3.0 j...Ch. 6 - A box is dropped onto a conveyor belt moving at...Ch. 6 - Shown below is a 10.0-kg block being pushed by a...Ch. 6 - As shown below, the mass of block 1 is m1=4.0kg ....Ch. 6 - A student is attempting to move a 30-kg...Ch. 6 - A crate of mass 100.0 kg rests on a rough surface...Ch. 6 - A car is moving at high speed along a highway when...Ch. 6 - A crate having mass 50.0 kg falls horizontally off...Ch. 6 - A 15-kg sled is pulled across a horizontal,...Ch. 6 - A 30.O-g ball at the end of a stung is swung in a...Ch. 6 - A particle of mass 0.50 kg starts moves through a...Ch. 6 - A stunt cyclist rides on the interior of a...Ch. 6 - When a body of mass 0.25 kg is attached to a...Ch. 6 - A piece of bacon starts to slide down the pan when...Ch. 6 - A plumb bob bangs from the roof of a railroad car....Ch. 6 - An airplane flies at 120.0 m/s and banks at a...Ch. 6 - The position of a particle is given by r(t)=A(cost...Ch. 6 - Two blocks connected by a string are pulled across...Ch. 6 - As shown below, the coefficient of kinetic...Ch. 6 - In the figure, the coefficient of kinetic friction...Ch. 6 - Two blocks are stacked as shown below, and rest on...Ch. 6 - A box rests on the (horizontal) back of a truck....Ch. 6 - A double-incline plane is shown below. 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