Tutorial_Chapter_6

# Tutorial_Chapter_6 - Chapter 6 Friction Tutorial 6 1 The...

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Chapter 6 Friction Tutorial 6 1 Copyright © Rahimah 1. The coefficient of static friction between the 180N crate and the ramp is µ s = 0.3. What is the magnitude of the smallest horizontal force the rope must exert on the crate to prevent it from sliding down the ramp? Ans: T=10.4 N, N = 173 N 2. Najil places a 10 N book on the table that is tilted 15 ° relative to the horizontal. He finds that if he exerts a very small force on the book as shown, the book remains in equilibrium, but if she removes the force, the book slides down the table. What force would he need to exert on the book (in direction parallel to the table) to cause it to slide up the table? Ans : F=5.176 N 3. Fashli parks his 15kN car on a sloped street. The brakes are applied to both its front and rear wheels. a. If the coefficient of static friction between the car s tires and the road is µ s = 0.8, what is the steepest slope (in degrees relative to the horizontal) on which the car could remain in equilibrium? b.

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Tutorial_Chapter_6 - Chapter 6 Friction Tutorial 6 1 The...

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