2. A block of mass m is pulled along a level surface by a rope that makes an upward angle of 0with the horizontal. The tension in the rope is T. It passes over a rough patch that has acoefficient of kinetic friction that changes with position, where µ = (Ax – Bx²), and x = 0 iswhere it entered the rough patch. The block started from rest at x = 0.(a) What is the speed of the block at x = (A/2B)? Put your answer in terms of m,0 T, A, B,and g. Do not have the symbol μk in your answer.

2. A block of mass m is pulled along a level surface by a rope that makes an upward angle of 0 with the horizontal. The tension in the rope is T. It passes over a rough patch that has a coefficient of kinetic friction that changes with position, where μ = (Ax – Bx²), and x = 0 is where it entered the rough patch. The block started from rest at x = 0. (a) What is the speed of the block at x = = (A/2B)? Put your answer in terms of m, 0 T, A, B, and g. Do not have the symbol k in your answer.

2. A block of mass m is pulled along a level surface by a rope that makes an upward angle of 0 with the horizontal. The tension in the rope is T. It passes over a rough patch that has a coefficient of kinetic friction that changes with position, where μ = (Ax – Bx²), and x = 0 is where it entered the rough patch. The block started from rest at x = 0. (a) What is the speed of the block at x = = (A/2B)? Put your answer in terms of m, 0 T, A, B, and g. Do not have the symbol k in your answer.

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter5: Displacement And Force In Two Dimensions

Section: Chapter Questions

Problem 8STP

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