Force and Translational Dynamics
What is the primary role of friction as a force?
A box is sliding across a floor. In which direction does the kinetic friction force act?
A wooden block with a normal force of 50 N is sliding across a steel surface. The coefficient of kinetic friction between the wood and steel is 0.4. What is the magnitude of the kinetic friction force?
A 2 kg block is sliding down a incline. The coefficient of kinetic friction between the block and the incline is 0.2. If the block is also being pushed down the incline with a force of 5 N, what is the acceleration of the block?
A book is at rest on a table. You gently push the book horizontally, but it doesn't move. What type of friction is acting on the book?
A 10 kg box is resting on a horizontal floor. The coefficient of static friction between the box and the floor is 0.5. What is the maximum static friction force that can act on the box before it starts to move?
A 5 kg block is at rest on a horizontal surface. The coefficient of static friction is 0.6, and the coefficient of kinetic friction is 0.4. A horizontal force of 20 N is applied to the block. Will the block move, and if so, what will its acceleration be?
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How does the coefficient of static friction () typically compare to the coefficient of kinetic friction () for the same two surfaces?
A box with a mass of 10 kg is initially at rest on a horizontal surface. The coefficients of static and kinetic friction between the box and the surface are 0.5 and 0.3, respectively. A horizontal force of 40 N is applied to the box. Determine the friction force and the acceleration of the box.