# Exercise 2.25 Rope between inclines

A rope rests on two platforms that are both inclined at an angle $$\theta$$ (which you are free to pick), as shown in Figure above. The rope has uniform mass density, and the coefficient of friction between it and the platforms is 1. The system has left-right symmetry.

What is the largest possible fraction of the rope that does not touch the platforms?

What angle $$\theta$$ allows this maximum fraction?

Note by Beakal Tiliksew
4 years, 3 months ago

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What is the source of this question...?

- 1 year, 5 months ago

Its from harvard university's website

- 8 months, 2 weeks ago

- 3 years, 7 months ago

22.5

- 4 years ago

answer is fraction:- 3 - 2^1.5 and angle is pi/8 i.e. 45/2 in degrees

- 4 years, 1 month ago

Largest possible fraction should be 1/2

- 4 years, 1 month ago

cn u pls post the ans ? is it 45

- 4 years, 1 month ago

90 degrees

- 4 years, 1 month ago

Comment deleted Jun 13, 2014

If the latex is bothering u, simoly post it, we will understand

- 4 years, 3 months ago

22.5

- 9 months ago

45

- 4 years, 1 month ago