Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN: 9781305116399
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 6, Problem 6.2QQ
A bead slides at constant speed along a curved wire lying on a horizontal surface as shown in Figure 6.8. (a) Draw the vectors representing the force exerted by the wire on the bead at points Ⓐ, Ⓑ,and Ⓒ. (b) Suppose the bead in Figure 6.8 speeds up with constant tangential acceleration as it moves toward the right. Draw the vectors representing the forces on the bead at points Ⓐ, Ⓑ,and Ⓒ.
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A man pushes a m = 3.20 kg block a distance d = 7.40 m along the floor by a constant force of magnitude F = 16.0 N directed at an angle ? = 20.0° below the horizontal as shown in the figure. Assume the floor is frictionless. (Enter your answers in joules.)
Two blocks are on a horizontal surface with their centers separated by a distance d. The block on the left is labeled m. An arrow points downward and to the right toward the left block. The arrow makes an angle of ? with the horizontal.
(a)Determine the work done on the block by the applied force (the force on the block exerted by the man).
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A dancer is standing on one leg on a drawbridge that is about to open. The coefficients of static and kinetic friction between the drawbridge and the dancer's foot are μs and μk, respectively. n⃗ represents the normal force exerted on the dancer by the bridge, and F⃗g represents the gravitational force exerted on the dancer, as shown in the drawing.(Figure 1). For all the questions, we can assume that the bridge is a perfectly flat surface and lacks the curvature characteristic of most bridges.
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Problem 10 : A cord connected at one end to a block which can slide on an inclined plane has its other end wrapped around a cylinder resting in a depression at the top of the plane as shown in (Figure 1).
Part A
Determine the speed of the block after it has traveled 1.30 m along the plane, starting from rest. Assume there is no friction.
Express your answer using two significant figures.
Part B
Determine the speed of the block after it has traveled 1.30 m along the plane, starting from rest. Assume the coefficient of friction between all surfaces is μ = 0.0280. Since the block is much lighter than the cylinder, ignore tension in the string when calculating the normal force on the cylinder.
Do not ignore tension in the string when calculating the net torque (including friction) on the cylinder.
Chapter 6 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
Ch. 6 - You are riding on a Ferris wheel that is rotating...Ch. 6 - A bead slides at constant speed along a curved...Ch. 6 - Consider the passenger in the car making a left...Ch. 6 - A basketball and a 2-inch-diameter steel ball,...Ch. 6 - A child is practicing for a BMX race. His speed...Ch. 6 - Consider a skydive r who has stepped from a...Ch. 6 - A door in a hospital has a pneumatic closer that...Ch. 6 - A pendulum consists of a small object called a bob...Ch. 6 - As a raindrop falls through the atmosphere, its...Ch. 6 - An office door is given a sharp push and swings...
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