The Honor Pledge: Please read this statement and sign below it. \"I have neither

Question

The Honor Pledge: Please read this statement and sign below it. "I have neither given nor received unauthorized assistance on this midterm test. Signature I. State Newton's second law. Write equation. 2. In dynamics, the friction force acting on a moving object is always A) in the direction of its motion. B) a kinetic friction. C) a static friction. D) zero. 3. If a particle is connected to a spring, the elastic spring force is expressed by F-ks. The "s" in this equation is the B) un-deformed length of the spring A) spring constant C) difference between deformed length and un-deformed length. D) deformed length of the spring. 4. When a pilot flies an airplane in a vertical loop of constant radius r at constant speed v, his apparent weight is maximum at A) Point A B) Point B (top of the loop) C) Point C D) Point D (bottom of the loop) And his apparent weight is minimum at A) Point A B) Point B (top of the loop) C) Point C D) Point D (bottom of the loop) Draw the FEBD and KD at point B and at point D,. Write down the equations of motion at point B and at point D

Explanation / Answer

2. Kinetic friction

3. it is the difference the deformed and un-deformed length

4. The net force is maximum at the bottom

as net weight is = mg + m v2 / r

At the top, net weight is = mg - m v2 / r

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