Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the speed of the blades tips can be quite high-many times higher than the wind speed. a turbine has blades 59m long that spin at13rpm .
at the tip of a blade, what is the speed?
at the tip of a blade, what is the centripetal acceleration?
a big dog has a torso that is approximately circular, with a radius of 16cm . at the midpoint of a shake, the dog's fur is moving at a remarkable 2.5m/s .
what force is required to keep a 10 mg water droplet moving in this circular arc?
what is the ratio of this force to the weight of a droplet?
Answers: 3
Physics, 22.06.2019 00:50
While goofing off at the ice skating rink, a student takes off her shoes and places each of them on the ice. her friend, a hockey player, then shoots a hockey puck at each shoe. the first puck immediately comes to rest after it collides with the left shoe. the second puck rebounds after it collides with the right shoe. if each hockey puck has the same incoming speed, which shoe has greater speed after the collision? the right shoe. both shoes have the same speed. the left shoe.
Answers: 3
Physics, 22.06.2019 06:30
5submission this assignment is worth 20 points total. you are required to submit the following by next lab: 1. (3 points) determine the equation for the output angular velocity ω2 = θ˙ 2 as a function of θ1, ω1 = θ˙ 1 and α. you must show all your work to receive credit. 2. (2 points) use the result of problem#1 to plot ω2 over 0 ≤ θ1 ≤ 360deg with ω1 = 360deg/sec. do this for α = {10,30}deg. show the results on the same plot and properly label the axes, title, legend. for this you can use matlab or ms excel. 3. (3 points) determine the equation for the output angular acceleration ω˙ 2 and create a plot similar to the one in problem#2. 4. (10 points) submit plots of the results (ω2 and ω˙ 2) obtained from creo/mechanism and compare them to results of problem#2 and problem#3. note that you should do these comparisons for the two cases with α = {10,30}deg. 5. (2 points) provide a brief explanation of the results. did they match? what are the implications as misalignment angle increases?
Answers: 3
Physics, 22.06.2019 09:30
True or false graphs must include scales that increase by the same amount
Answers: 1
Modern wind turbines are larger than they appear, and despite their apparently lazy motion, the spee...
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