Home > 0877 > GR0877 Problem 82

## GR0877 Problem 82

PROBLEM STATEMENT: This problem is still being typed.

SOLUTION: (D) Kinetic energy of the mass is $T = \frac{1}{2} m r^2 \dot{\varphi}^2 + \frac{1}{2} m \dot{r}^2$. Potential energy of the spring is $U = \frac{1}{2 }k (r-s)^2$. Lagrangian is $L = T - U$. Choice (D).

Found a typo? Comment!

 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Want to get a full PDF with solutions? Read THIS.

The comments appending particular solutions are due to the respective users. Educational Testing Service, ETS, the ETS logo, Graduate Record Examinations, and GRE are registered trademarks of Educational Testing Service. The examination questions are © 2008 by ETS.

Categories: 0877 Tags: , , , ,
1. 13.10.2011 at 21:58

Not a mathematical typo, but ‘string’ should be ‘spring’.

• 13.10.2011 at 23:34

Thanks. Fixed.

2. 15.04.2013 at 05:31

This is wrong in your PDF solutions. You say (C) at the beginning and then (D) at the end

• 16.04.2013 at 22:32

Thanks. I will update solutions soon.