Last Friday in class we did some reviews in dynamics. We did the case questions 1,4,5.
We also did the question from the book in page 196 from 1 to 3.
1. A copy of Physics: Concepts and Connections leaves the printing press and slides down a 4.0 m long ramp into the arms of an eager physics student. If the ramp is inclined at an angle of 25 degrees to the horizontal ans has a coefficient of kinetic friction of 0.10, how long will it take the 2.0 kg textbook to reach the student?
1. A copy of Physics: Concepts and Connections leaves the printing press and slides down a 4.0 m long ramp into the arms of an eager physics student. If the ramp is inclined at an angle of 25 degrees to the horizontal ans has a coefficient of kinetic friction of 0.10, how long will it take the 2.0 kg textbook to reach the student?
2. The plastic case from your least-favorite CD recording is flung up a frictionless ramp, inclined at an angle of 20 degrees to the horizontal. If the case leaves your hand at a speed of 4.0 m/s, how long will it take before the case comes to rest?
3. A skateboarder slides down a frictionless ramp inclined at an angle of 30 degrees to the horizontal. He then slides across a frictionless horizontal floor and begins to slide up a second inclined at an angle of 25 degrees to the horizontal. The skateboarder starts at a distance of 10 m from the bottom of the first incline. hoe far up the second incline will he go if the coefficient of kinetic friction on the second incline is 0.10?
Lastly, we did a worksheet on transparency.
1 comment:
Thanks Marinhel. You summarized the activities of the class very well.
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