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Phy 121
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I am having trouble getting the last part of the this problem:
A turbine accelerates uniformly at 1.399 radians/second/second.
• How long will it a to accelerate from 1.899 radians/second to 4.299 radians/second?
• Through what angular displacement will it turn in this time?
I know this is Set 8 Problem 9, however even after looking at the solution I cannot figure out how to get the angular displacement.
I am able to get the time to be (4.299 rad/sec-1.899 rad/sec)/1.399 rad/sec^2= 1.715 sec
Change in velocity= (1.899 rad/sec+4.299 rad/sec)/2= 3.099 rad/sec
I thought you would just take the change in velocity and divide it by the time, however I am not getting the same answer as the solution?????
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What you have calculated here would be the average velocity, not the change in velocity.
You would indeed find the change in velocity and divide by the change in clock itme. You'll get something like 1.3 radians / second^2, give or take a couple of tenths in the arithmetic. If not, let me know how you are calculating your result.
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