(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A light rigid rod PQ is hinged smoothly to the wall at one end while the other end is connected by an inextensible string to a point R directly above P. A weight W is suspended from a point on the rod. If the rod remains horizontal, which of the following change(s) would increase the tension in the string?

(1) Shifting the weight towards Q

(2) Replacing the string with a shorter one and connecting it to the mid-points of PQ and PR

(3) Replacing the string with a longer one and connecting it to a point higher than R

2. Relevant equations

3. The attempt at a solution

I guess the first one is correct, as the force will be greater when W is farer away from the hinged point, but i have no idea how the length of the string is related to the tension.

Is it related to the L/g ^1/2?

Please help:(

many thanks

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# Homework Help: Tension in a string

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