13. (Ch 5) You are holding a book against a wall by pushing up at an angle with your hand. Your push makes an angle of 0 with the wall. The mass of the book is m, and the coefficient of static friction between the book and the wall is u. (a) Draw the "free-body" diagram for the book. And then write out the sum of force components in x and y. (b) Rearrange equations to find the magnitude of the push you must exert to (barely) hold the book stationary. In other words, find the force F in terms of all the other given variables. (c) Think Calculus. Determine for what value of the angle is the magnitude of the required push as small as possible (minimum)?

13. (Ch 5) You are holding a book against a wall by pushing up at an angle with your hand. Your push makes an angle of 0 with the wall. The mass of the book is m, and the coefficient of static friction between the book and the wall is u. (a) Draw the "free-body" diagram for the book. And then write out the sum of force components in x and y. (b) Rearrange equations to find the magnitude of the push you must exert to (barely) hold the book stationary. In other words, find the force F in terms of all the other given variables. (c) Think Calculus. Determine for what value of the angle is the magnitude of the required push as small as possible (minimum)?

Name: Question 13solve h 3) A projectile is fired 2.5n angle of 30.0 ° above
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Description: Question 13solve h 3) A projectile is fired 2.5n angle of 30.0 ° above the horizontal on a long flat firing range. Determine (a) theal time in the air, (b) the total horizontal distance covered, and (c) the maximum heightached by the projectile above

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

Chapter3: Motion In Two Dimensions

Section: Chapter Questions

Problem 9P

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