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

A swing is made from a rope that will tolerate a maximum

tension of 800N without breaking. Initially, the swing

hangs vertically. The swing is then pulled back at an

angle of 60.0 degree with respect to the vertical and

released from rest. What is the mass of the heaviest

person who can ride the swing?

2. Relevant equations

Fc = mv^2/r

trig ratios

3. The attempt at a solution

I initially just thought of doing 800N / 9.81m/s^2 which give 81.5kg or so but i thought that was too easy and can't be right so I did some more complex stuff:

using unit circle:

r = sin60r = 0.5r

Fc = mv^2/r

I forgot how but i somehow ended up in the step below, where 0.5r cancels out and in the end and the end result goes back to m = 800/9.81

800 = (9.81m(0.5r))/0.5r

still pretty sure that is wrong and I am really lost, so help please o;

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# Homework Help: Swing question

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