Homework #7 - Inclines

# Homework #7 - Inclines - sanchez(es25396 – Homework#7...

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Unformatted text preview: sanchez (es25396) – Homework #7 - Inclines – guevara – (130101) 1 This print-out should have 13 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0 points A block accelerates 3 m / s 2 down a plane in- clined at angle 27.0 ◦ . The acceleration of gravity is 9 . 81 m / s 2 . m μ k 3 m / s 2 27 ◦ Find μ k between the block and the inclined plane. 1. 0.166 2. 0.853 3. 1.289 4. 0.510 5. 0.148 002 10.0 points A block sits motionless on an inclined plane, held in place by friction. The plane could be tilted even more upwards and the block would remain motionless. M μ s θ Consider the following statements: I. The magnitude of the frictional force equals M g sin θ . II. The magnitude of the frictional force is less than M g sin θ . III. The magnitude of the frictional force is greater than μ s M g sin θ . IV. Static friction must vanish since the block is not moving. V. The magnitude of the frictional force equals μ s M g cos θ . VI. The magnitude of the frictional force is less than μ s M g cos θ ....
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Homework #7 - Inclines - sanchez(es25396 – Homework#7...

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