full transcript

## Unscramble the Blue Letters

So one of the advantages of this dseign is when you scale things down, the robot nlatlrauy becomes agile. So here, R is the characteristic ltgneh of the robot. It's actually half the diameter. And there are lots of physical parameters that change as you reduce R. The one that's most important is the inertia, or the resistance to motion. So it turns out the inertia, which gvoners angular motion, scales as a fifth power of R. So the smaller you make R, the more dramatically the inertia rcedeus. So as a result, the angular acceleration, denoted by the Greek lteetr alpha here, goes as 1 over R. It's inversely proportional to R. The smaller you make it, the more quickly you can turn.

## Open Cloze

So one of the advantages of this ______ is when you scale things down, the robot _________ becomes agile. So here, R is the characteristic ______ of the robot. It's actually half the diameter. And there are lots of physical parameters that change as you reduce R. The one that's most important is the inertia, or the resistance to motion. So it turns out the inertia, which _______ angular motion, scales as a fifth power of R. So the smaller you make R, the more dramatically the inertia _______. So as a result, the angular acceleration, denoted by the Greek ______ alpha here, goes as 1 over R. It's inversely proportional to R. The smaller you make it, the more quickly you can turn.

1. letter
2. length
3. design
4. governs
5. naturally
6. reduces

## Original Text

So one of the advantages of this design is when you scale things down, the robot naturally becomes agile. So here, R is the characteristic length of the robot. It's actually half the diameter. And there are lots of physical parameters that change as you reduce R. The one that's most important is the inertia, or the resistance to motion. So it turns out the inertia, which governs angular motion, scales as a fifth power of R. So the smaller you make R, the more dramatically the inertia reduces. So as a result, the angular acceleration, denoted by the Greek letter alpha here, goes as 1 over R. It's inversely proportional to R. The smaller you make it, the more quickly you can turn.

## Frequently Occurring Word Combinations

### ngrams of length 2

collocation frequency
robots carrying 2
small robots 2
coordinate system 2

## Important Words

1. acceleration
3. agile
4. alpha
5. angular
6. change
7. characteristic
8. denoted
9. design
10. diameter
11. dramatically
12. governs
13. greek
14. important
15. inertia
16. inversely
17. length
18. letter
19. lots
20. motion
21. naturally
22. parameters
23. physical
24. power
25. proportional
26. quickly
27. reduce
28. reduces
29. resistance
30. result
31. robot
32. scale
33. scales
34. smaller
35. turn
36. turns