1.Which of the following is true for any kinetic (sliding) friction force? The f
ID: 2190305 • Letter: 1
Question
1.Which of the following is true for any kinetic (sliding) friction force? The frictional force is greater for smooth surfaces than for rough surfaces. The frictional force is dependent on the relative velocity between sliding surfaces. The frictional force is directly proportional to the normal force. The frictional force depends significantly on the surface area of contact. 2. Complete this statement. "Once an object on a rough surface is given enough force to set it into motion, __________." Answer more force is required to keep it in motion at a constant velocity. the same amount of force will keep it in motion at a constant velocity. less force is required to keep it in motion at a constant velocity. More information is needed. 3. A crate is placed on a rough incline. The coefficient of static friction between the incline and the crate is 0.35 and the angle of inclination is 25 degrees. Will it move down the incline? Answer Yes No 4. An Atwood Machine consists of two masses connected by a rigid string, hanging over a fixed pulley. If m2 > m1, and m1 experiences a force of tension from the string equal to 20 N, how much tension will the string exert on m2? Answer 0 N Less than 20 N, but greater than zero. Greater than 20 N. Exactly 20 N. Please help me!!!Explanation / Answer
The frictional force is directly proportional to the normal force.
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