EP PHYSICS (W/ANSWERS+INDEX)
10th Edition
ISBN: 9781119081739
Author: CUTNELL
Publisher: WILEY
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Chapter 2, Problem 86AP
To determine
The displacement of places above the ground.
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An object is subjected to a friction force with magnitude 5.49 N, which acts against the object's velocity. What is the work (in J) needed to move the object at constant speed for the following routes?
y (m)
C
B
(5.00, 5.00)
A
x (m)
©
(a) the purple path O to A followed by a return purple path to O
]
(b) the purple path O to C followed by a return blue path to O
]
(c) the blue path O to C followed by a return blue path to O
]
(d) Each of your three answers should be nonzero. What is the significance of this observation?
○ The force of friction is a conservative force.
○ The force of friction is a nonconservative force.
A block of mass m = 2.50 kg is pushed d = 2.30 m along a frictionless horizontal table by a constant applied force of magnitude F = 10.0 N directed at an angle
25.0° below the horizontal as shown in the figure below.
m
(a) Determine the work done by the applied force.
]
(b) Determine the work done by the normal force exerted by the table.
]
(c) Determine the work done by the force of gravity.
]
(d) Determine the work done by the net force on the block.
]
A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.845 m/s encounters a rough horizontal surface of length = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.357 and he exerts a constant horizontal force of 294 N on
the crate.
e
(a) Find the magnitude and direction of the net force on the crate while it is on the rough surface.
magnitude
direction
---Select---
N
(b) Find the net work done on the crate while it is on the rough surface.
]
(c) Find the speed of the crate when it reaches the end of the rough surface.
m/s
Chapter 2 Solutions
EP PHYSICS (W/ANSWERS+INDEX)
Ch. 2.1 - 1. A honeybee leaves the hive and travels a total...Ch. 2.2 - 2. Is the average speed of a vehicle a vector or a...Ch. 2.2 - Prob. 3CYUCh. 2.2 - Prob. 4CYUCh. 2.2 - 5. A straight track is 1600 m in length. A runner...Ch. 2.2 - Prob. 6CYUCh. 2.3 - 7. At one instant of time, a car and a truck are...Ch. 2.3 - Prob. 8CYUCh. 2.3 - Prob. 9CYUCh. 2.3 - 10. A runner runs half the remaining distance to...
Ch. 2.4 - 11. The muzzle velocity of a gun is the velocity...Ch. 2.4 - 12. A motorcycle starts from rest and has a...Ch. 2.6 - Prob. 13CYUCh. 2.6 - Prob. 14CYUCh. 2.6 - 15. Two objects are thrown vertically upward,...Ch. 2.6 - 16. A ball is dropped from rest from the top of a...Ch. 2 - Prob. 1FCCh. 2 - Prob. 3FCCh. 2 - Prob. 6FCCh. 2 - Prob. 10FCCh. 2 - Prob. 13FCCh. 2 - Prob. 19FCCh. 2 - Prob. 22FCCh. 2 - Prob. 24FCCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - Prob. 7PCh. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - Prob. 10PCh. 2 - Prob. 11PCh. 2 - Prob. 12PCh. 2 - Prob. 13PCh. 2 - Prob. 14PCh. 2 - Prob. 15PCh. 2 - 16. Over a time interval of 2.16 years, the...Ch. 2 - Prob. 17PCh. 2 - Prob. 18PCh. 2 - Prob. 19PCh. 2 - Prob. 20PCh. 2 - Prob. 21PCh. 2 - Prob. 22PCh. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - Prob. 26PCh. 2 - Prob. 27PCh. 2 - Prob. 28PCh. 2 - Prob. 29PCh. 2 - Prob. 30PCh. 2 - Prob. 31PCh. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - Prob. 35PCh. 2 - Prob. 36PCh. 2 - Prob. 37PCh. 2 - Prob. 38PCh. 2 - Prob. 39PCh. 2 - Prob. 40PCh. 2 - Prob. 41PCh. 2 - Prob. 42PCh. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - Prob. 45PCh. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Prob. 48PCh. 2 - Prob. 49PCh. 2 - Prob. 50PCh. 2 - Prob. 51PCh. 2 - Prob. 52PCh. 2 - Prob. 53PCh. 2 - Prob. 54PCh. 2 - Prob. 55PCh. 2 - Prob. 56PCh. 2 - Prob. 57PCh. 2 - Prob. 58PCh. 2 - Prob. 59PCh. 2 - Prob. 60PCh. 2 - Prob. 61PCh. 2 - Prob. 62PCh. 2 - Prob. 63PCh. 2 - Prob. 64PCh. 2 - Prob. 65PCh. 2 - Prob. 66PCh. 2 - Prob. 67PCh. 2 - Prob. 68PCh. 2 - Prob. 69PCh. 2 - Prob. 70PCh. 2 - Prob. 71PCh. 2 - Prob. 72APCh. 2 - Prob. 73APCh. 2 - Prob. 74APCh. 2 - Prob. 75APCh. 2 - Prob. 76APCh. 2 - Prob. 77APCh. 2 - Prob. 78APCh. 2 - Prob. 79APCh. 2 - Prob. 80APCh. 2 - Prob. 81APCh. 2 - Prob. 82APCh. 2 - Prob. 83APCh. 2 - Prob. 84APCh. 2 - 85. A police car is traveling at a velocity of...Ch. 2 - Prob. 86APCh. 2 - Prob. 87APCh. 2 - Prob. 88APCh. 2 - Prob. 89APCh. 2 - Prob. 90CCPCh. 2 - Prob. 91CCP
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