Physics for Scientists and Engineers, Vol. 1
6th Edition
ISBN: 9781429201322
Author: Paul A. Tipler, Gene Mosca
Publisher: Macmillan Higher Education
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Chapter 6, Problem 21P
To determine
Work done for completing the given task.
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A crate of mass 9.8 kg is pulled up a rough indine with an initial speed of 1.54 mys. The pulling force is 9N parallel to the incline, which makes an angle of 20.1 with the hortaontal. The coefficient
of kinetic friction is 0.400, and the crate is puled .02 m.
(a) How much work is done by the gravitational force on the crate?
(b) Determine the increase in internal energy of the crate-indine system owing to frietion.
(e) How much work is done by the 98-N force on the crate?
(4) what is the change in kinetic energy of the crate?
(w) what is the speed of the crate after being puled 5.02 m
m/s
A(40kg) box initially at rest is pushed (5m)
a long a rough horizontal floor with a
constant applied horizontal force of
(130N). If the coefficient of fri-ction
between box and floor is (0.3). find
1- the work done by the applied force
2-the increase in internal energy in the box-
floor system due to fri-ction
3-the work done by the normal force
4-the change in kinetic energy of the box
5-the final speed of the box.
A box lying on a horizontal frictionless surface is pulled by a horizontal force of 100 N. The box is displaced 3m to the right. Calculate the work done by the force on the box in Joules. (Indicate the numerical answer only and no unit anymore.)
Calculate the work done in Joules on a box lying on a horizontal frictionless surface, by a 200 N force, which acts at an angle of 20 degrees to the horizontal. The force displaces the box 5 m. (Round off the answer to 2 decimal and indicate the numerical answer only and no unit anymore.)
Chapter 6 Solutions
Physics for Scientists and Engineers, Vol. 1
Ch. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Prob. 10P
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- In a Coyote/Road Runner cartoon clip (https://openstaxcollege.org/l/21coyroadcarcl), a spring expands quickly and sends the coyote into a rock. If the spring extended 5 m and sent the coyote of mass 20 kg to a speed of 15 m/s, (a) what is the spring constant of this spring? (b) If the coyote were sent vertically into the air with the energy given to him by the spring, how high could he go if there were no non-conservative forces?arrow_forwardCheck Your Understanding Find the work done by the same force in Example 7.4 over a cubic path, y=(0.25m-2)x3 , between the same points A=(0,0) and B=(2m,2m) .arrow_forwardIn an iconic movie scene, Forrest Gump (https://openstaxcollege.org/l/21ForrGumpvid) runs around the country. If he is running at a constant speed of 3 m/s, would it take him more or less energy to run uphill or downhill and why?arrow_forward
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