5. Suppose a body with weight W is pulled along a flat plane by a drag forcewhich acts alongside a string fixed to the body. If the string creates an angle0 with the flat plane, then the drag force isF =sin 0 + cos 0where the coefficient of friction is denoted by u. Note that u and W areconstants. Determine such a 0 for which F is minimum. Also evaluate thatminimum value.

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Description: 5. Suppose a body with weight W is pulled along a flat plane by a drag forcewhich acts alongside a string fixed to the body. If the string creates an angle0 with the flat plane, then the drag force isF =sin 0 + cos 0where the coefficient of friction

When frictional force is in the picture, it is always easy to pull an object than to push it.

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5. Suppose a body with weight W is pulled along a flat plane by a drag force which acts alongside a string fixed to the body. If the string creates an angle 0 with the flat plane, then the drag force is F u sin 0+ cos 0 where the coefficient of friction is denoted by u. Note that u and W are constants. Determine such a 0 for which F is minimum. Also evaluate that minimum value.

5. Suppose a body with weight W is pulled along a flat plane by a drag force which acts alongside a string fixed to the body. If the string creates an angle 0 with the flat plane, then the drag force is F u sin 0+ cos 0 where the coefficient of friction is denoted by u. Note that u and W are constants. Determine such a 0 for which F is minimum. Also evaluate that minimum value.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter5: More Applications Of Newton’s Laws

Section: Chapter Questions

Problem 42P

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