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27 Nov 2019
A tired and overloaded student is attempting to hold a largephysics textbook wedged under his arm. The textbook has a mass of3.0 kg, while the coefficient of static friction of the textbookagainst the student's underarm is 0.320 and the coefficient ofstatic friction of the book against the student's shirt is0.160.
(a) What is the minimum horizontal force that the student mustapply to the textbook to prevent it from falling?
(b) If the student can only exert a force of 65.3 N, what is theacceleration of the textbook as it slides from under his arm? Thecoefficient of kinetic friction of arm against textbook is 0.200,while that of shirt against textbook is 0.090.
What is the magnitude?
What is the direction?
A tired and overloaded student is attempting to hold a largephysics textbook wedged under his arm. The textbook has a mass of3.0 kg, while the coefficient of static friction of the textbookagainst the student's underarm is 0.320 and the coefficient ofstatic friction of the book against the student's shirt is0.160.
(a) What is the minimum horizontal force that the student mustapply to the textbook to prevent it from falling?
(b) If the student can only exert a force of 65.3 N, what is theacceleration of the textbook as it slides from under his arm? Thecoefficient of kinetic friction of arm against textbook is 0.200,while that of shirt against textbook is 0.090.
What is the magnitude?
What is the direction?
Nestor RutherfordLv2
20 Mar 2019
